/// <summary>
/// Adds an item to the list view.
/// </summary>
public void AddItem(TsCDaItem item)
{
// create list view item.
ListViewItem listItem = new ListViewItem(item.ItemName, Resources.IMAGE_YELLOW_SCROLL);
// add appropriate sub-items.
listItem.SubItems.Add(OpcClientSdk.OpcConvert.ToString(GetFieldValue(item, ITEM_PATH)));
listItem.SubItems.Add(OpcClientSdk.OpcConvert.ToString(GetFieldValue(item, REQUESTED_TYPE)));
listItem.SubItems.Add(OpcClientSdk.OpcConvert.ToString(GetFieldValue(item, MAXIMUM_AGE)));
listItem.SubItems.Add(OpcClientSdk.OpcConvert.ToString(GetFieldValue(item, ACTIVE)));
listItem.SubItems.Add(OpcClientSdk.OpcConvert.ToString(GetFieldValue(item, DEADBAND)));
listItem.SubItems.Add(OpcClientSdk.OpcConvert.ToString(GetFieldValue(item, SAMPLING_RATE)));
listItem.SubItems.Add(OpcClientSdk.OpcConvert.ToString(GetFieldValue(item, ENABLE_BUFFERING)));
// save item object as list view item tag.
listItem.Tag = item;
// insert/add item to list view.
if (item == m_template)
{
ItemListLV.Items.Insert(0, listItem);
}
else
{
ItemListLV.Items.Add(listItem);
}
// adjust columns.
AdjustColumns();
}
/// <summary>
/// Edits the item template.
/// </summary>
private void EditTemplate(TsCDaItem template)
{
// prompt user to edit the template.
TsCDaItem[] templates = new ItemListEditDlg().ShowDialog(new TsCDaItem[] { template }, IsReadItem, false);
if (templates == null || templates.Length != 1)
{
return;
}
// get existing items without applying defaults.
ArrayList items = new ArrayList();
foreach (ListViewItem item in ItemListLV.Items)
{
if (item.Tag != null && item.Tag.GetType() == typeof(TsCDaItem))
{
if (item.Tag != m_template)
{
items.Add(item.Tag);
}
}
}
// re-initialize the list with the new template.
Initialize(templates[0]);
// add items back.
foreach (TsCDaItem item in items)
{
AddItem(item);
}
}
/// <summary>
/// Copy values from control into object - throw exceptions on error.
/// </summary>
public object Get()
{
TsCDaItem item = new TsCDaItem(m_identifier);
item.ItemName = ItemNameTB.Text;
item.ItemPath = ItemPathTB.Text;
item.ReqType = (ReqTypeSpecifiedCB.Checked)?ReqTypeCTRL.SelectedType:null;
item.MaxAge = (MaxAgeSpecifiedCB.Checked)?(int)MaxAgeCTRL.Value * 1000:0;
item.MaxAgeSpecified = MaxAgeSpecifiedCB.Checked;
item.Active = (ActiveSpecifiedCB.Checked)?ActiveCB.Checked:false;
item.ActiveSpecified = ActiveSpecifiedCB.Checked;
item.Deadband = (DeadbandSpecifiedCB.Checked)?(float)DeadbandCTRL.Value:0;
item.DeadbandSpecified = DeadbandSpecifiedCB.Checked;
item.SamplingRate = (SamplingRateSpecifiedCB.Checked)?(int)SamplingRateCTRL.Value:0;
item.SamplingRateSpecified = SamplingRateSpecifiedCB.Checked;
item.EnableBuffering = (EnableBufferSpecifiedCB.Checked)?EnableBufferingCB.Checked:false;
item.EnableBufferingSpecified = EnableBufferSpecifiedCB.Checked;
// update the item id to reflect selections for complex data.
try
{
GetComplexItem(item);
}
catch (Exception e)
{
MessageBox.Show(e.Message);
item.ItemName = ItemNameTB.Text;
item.ItemPath = ItemPathTB.Text;
}
return(item);
}
/// <summary>
/// Adds an item to the list view.
/// </summary>
public void AddItem(TsCDaItem item)
{
// create list view item.
ListViewItem listItem = new ListViewItem(item.ItemName, Resources.IMAGE_YELLOW_SCROLL);
// add appropriate sub-items.
listItem.SubItems.Add(Technosoftware.DaAeHdaClient.OpcConvert.ToString(GetFieldValue(item, ItemPath)));
listItem.SubItems.Add(Technosoftware.DaAeHdaClient.OpcConvert.ToString(GetFieldValue(item, RequestedType)));
listItem.SubItems.Add(Technosoftware.DaAeHdaClient.OpcConvert.ToString(GetFieldValue(item, MaximumAge)));
listItem.SubItems.Add(Technosoftware.DaAeHdaClient.OpcConvert.ToString(GetFieldValue(item, Active)));
listItem.SubItems.Add(Technosoftware.DaAeHdaClient.OpcConvert.ToString(GetFieldValue(item, Deadband)));
listItem.SubItems.Add(Technosoftware.DaAeHdaClient.OpcConvert.ToString(GetFieldValue(item, SamplingRate)));
listItem.SubItems.Add(Technosoftware.DaAeHdaClient.OpcConvert.ToString(GetFieldValue(item, EnableBuffering)));
// save item object as list view item tag.
listItem.Tag = item;
// insert/add item to list view.
if (item == mTemplate_)
{
itemListLv_.Items.Insert(0, listItem);
}
else
{
itemListLv_.Items.Add(listItem);
}
// adjust columns.
AdjustColumns();
}
/// <summary>
/// Edits items in the specified subscription.
/// </summary>
private void EditItem(TreeNode node, TsCDaSubscription subscription, TsCDaItem item)
{
try
{
// save existing item id.
OpcItem itemId = new OpcItem(item);
TsCDaItem[] items = new ItemListEditDlg().ShowDialog(new TsCDaItem[] { item }, false, false);
if (items == null)
{
return;
}
// modify an existing item.
if (itemId.Key == items[0].Key)
{
subscription.ModifyItems((int)TsCDaStateMask.All, items);
}
// add/remove item because the item id changed.
else
{
items = subscription.AddItems(items);
subscription.RemoveItems(new OpcItem[] { itemId });
}
node.Text = items[0].ItemName;
node.Tag = items[0];
}
catch (Exception e)
{
MessageBox.Show(e.Message);
}
}
/// <summary>
/// Copy values from control into object - throw exceptions on error.
/// </summary>
public object Get()
{
TsCDaItem item = new TsCDaItem(mIdentifier_);
item.ItemName = itemNameTb_.Text;
item.ItemPath = itemPathTb_.Text;
item.ReqType = (reqTypeSpecifiedCb_.Checked)?reqTypeCtrl_.SelectedType:null;
item.MaxAge = (maxAgeSpecifiedCb_.Checked)?(int)maxAgeCtrl_.Value * 1000:0;
item.MaxAgeSpecified = maxAgeSpecifiedCb_.Checked;
item.Active = (activeSpecifiedCb_.Checked)?activeCb_.Checked:false;
item.ActiveSpecified = activeSpecifiedCb_.Checked;
item.Deadband = (deadbandSpecifiedCb_.Checked)?(float)deadbandCtrl_.Value:0;
item.DeadbandSpecified = deadbandSpecifiedCb_.Checked;
item.SamplingRate = (samplingRateSpecifiedCb_.Checked)?(int)samplingRateCtrl_.Value:0;
item.SamplingRateSpecified = samplingRateSpecifiedCb_.Checked;
item.EnableBuffering = (enableBufferSpecifiedCb_.Checked)?enableBufferingCb_.Checked:false;
item.EnableBufferingSpecified = enableBufferSpecifiedCb_.Checked;
// update the item id to reflect selections for complex data.
try
{
GetComplexItem(item);
}
catch (Exception e)
{
MessageBox.Show(e.Message);
item.ItemName = itemNameTb_.Text;
item.ItemPath = itemPathTb_.Text;
}
return(item);
}
/// <summary>
/// Initializes the control with the specified set of items.
/// </summary>
public void Initialize(TsCDaItem template, TsCDaItem[] items)
{
Initialize(template);
// add items.
if (items != null)
{
foreach (TsCDaItem item in items)
{
// clear subscription related fields.
if (IsReadItem)
{
item.ActiveSpecified = false;
item.DeadbandSpecified = false;
item.SamplingRateSpecified = false;
item.EnableBufferingSpecified = false;
}
AddItem(item);
}
}
// adjust columns.
AdjustColumns();
}
/// <summary>
/// Set things in motion so your service can do its work.
/// </summary>
protected override void OnStart(string[] args)
{
const string serverName = "opcda://localhost/Technosoftware.DaSample";
try
{
myDaServer = new TsCDaServer();
myDaServer.Connect(serverName);
OpcServerStatus status = myDaServer.GetServerStatus();
// Add a group with default values Active = true and UpdateRate = 500ms
TsCDaSubscriptionState groupState = new TsCDaSubscriptionState();
groupState.Name = "MyGroup"; // Group Name
group = (TsCDaSubscription)myDaServer.CreateSubscription(groupState);
// Add Items
TsCDaItem[] items = new TsCDaItem[3];
TsCDaItemResult[] itemResults;
items[0] = new TsCDaItem();
items[0].ItemName = "SimulatedData.Ramp"; // Item Name
items[0].ClientHandle = 100; // Client Handle
items[0].MaxAgeSpecified = true;
items[0].MaxAge = Int32.MaxValue;
items[1] = new TsCDaItem();
items[1].ItemName = "SimulatedData.Random"; // Item Name
items[1].ClientHandle = 150; // Client Handle
items[2] = new TsCDaItem();
items[2].ItemName = "InOut_I4"; // Item Name
items[2].ClientHandle = 200; // Client Handle
TsCDaItem[] arAddedItems;
itemResults = group.AddItems(items);
for (int i = 0; i < itemResults.GetLength(0); i++)
{
if (itemResults[i].Result.IsError())
{
Console.WriteLine(" Item " + itemResults[i].ItemName + "could not be added to the group");
}
}
arAddedItems = itemResults;
group.DataChangedEvent += new TsCDaDataChangedEventHandler(DataChangeHandler);
Console.WriteLine("Wait 5 seconds ...");
//System.Threading.Thread.Sleep(5000);
}
catch (OpcResultException e)
{
Console.WriteLine(" " + e.Message);
return;
}
catch (Exception e)
{
Console.WriteLine(" " + e.Message);
return;
}
}
/// <summary>
/// Adds an item into the tree.
/// </summary>
private void AddItem(TreeNode parent, TsCDaItem item)
{
TreeNode child = new TreeNode(item.ItemName);
child.ImageIndex = child.SelectedImageIndex = Resources.IMAGE_YELLOW_SCROLL;
child.Tag = item;
parent.Nodes.Add(child);
}
/// <summary>
/// Remove an item in the specified subscription.
/// </summary>
private void RemoveItem(TreeNode node, TsCDaSubscription subscription, TsCDaItem item)
{
try
{
subscription.RemoveItems(new OpcItem[] { item });
node.Remove();
}
catch (Exception e)
{
MessageBox.Show(e.Message);
}
}
/// <summary>
/// Returns the set of items in the control.
/// </summary>
public TsCDaItem[] GetItems()
{
ArrayList items = new ArrayList();
foreach (ListViewItem listItem in ItemListLV.Items)
{
// skip template.
if (listItem.Tag == m_template)
{
continue;
}
object field = null;
// create copy of item.
TsCDaItem item = (TsCDaItem)((TsCDaItem)listItem.Tag).Clone();
// Req Type
field = GetFieldValue(item, REQUESTED_TYPE);
item.ReqType = (System.Type)field;
// Max Age
field = GetFieldValue(item, MAXIMUM_AGE);
item.MaxAge = (field != null)?(int)field:0;
item.MaxAgeSpecified = field != null;
// Active
field = GetFieldValue(item, ACTIVE);
item.Active = (field != null)?(bool)field:false;
item.ActiveSpecified = field != null;
// Deadband
field = GetFieldValue(item, DEADBAND);
item.Deadband = (field != null)?(float)field:0;
item.DeadbandSpecified = field != null;
// Sampling Rate
field = GetFieldValue(item, SAMPLING_RATE);
item.SamplingRate = (field != null)?(int)field:0;
item.SamplingRateSpecified = field != null;
// Enable Buffering
field = GetFieldValue(item, ENABLE_BUFFERING);
item.EnableBuffering = (field != null)?(bool)field:false;
item.EnableBufferingSpecified = field != null;
// add item to list.
items.Add(item);
}
// convert to array of item objects.
return((TsCDaItem[])items.ToArray(typeof(TsCDaItem)));
}
/// <summary>
/// Returns the set of items in the control.
/// </summary>
public TsCDaItem[] GetItems()
{
ArrayList items = new ArrayList();
foreach (ListViewItem listItem in itemListLv_.Items)
{
// skip template.
if (listItem.Tag == mTemplate_)
{
continue;
}
object field = null;
// create copy of item.
TsCDaItem item = (TsCDaItem)((TsCDaItem)listItem.Tag).Clone();
// Req Type
field = GetFieldValue(item, RequestedType);
item.ReqType = (System.Type)field;
// Max Age
field = GetFieldValue(item, MaximumAge);
item.MaxAge = (field != null)?(int)field:0;
item.MaxAgeSpecified = field != null;
// Active
field = GetFieldValue(item, Active);
item.Active = (field != null)?(bool)field:false;
item.ActiveSpecified = field != null;
// Deadband
field = GetFieldValue(item, Deadband);
item.Deadband = (field != null)?(float)field:0;
item.DeadbandSpecified = field != null;
// Sampling Rate
field = GetFieldValue(item, SamplingRate);
item.SamplingRate = (field != null)?(int)field:0;
item.SamplingRateSpecified = field != null;
// Enable Buffering
field = GetFieldValue(item, EnableBuffering);
item.EnableBuffering = (field != null)?(bool)field:false;
item.EnableBufferingSpecified = field != null;
// add item to list.
items.Add(item);
}
// convert to array of item objects.
return((TsCDaItem[])items.ToArray(typeof(TsCDaItem)));
}
/// <summary>
/// Initializes the control with the specified template item.
/// </summary>
public void Initialize(TsCDaItem template)
{
// clear existing items.
ItemListLV.Items.Clear();
// create template item.
m_template = (template != null)?(TsCDaItem)template.Clone():new TsCDaItem();
m_template.ItemName = "<default>";
// add template to list.
AddItem(m_template);
// adjust columns.
AdjustColumns();
}
/// <summary>
/// Copy object values into controls.
/// </summary>
public void Set(object value)
{
// check for null value.
if (value == null)
{
SetDefaults(); return;
}
// cast value to item object.
TsCDaItem item = (TsCDaItem)value;
// save item identifier (including client and server handles).
mIdentifier_ = new OpcItem(item);
// update controls.
itemNameTb_.Text = item.ItemName;
itemPathTb_.Text = item.ItemPath;
reqTypeCtrl_.SelectedType = item.ReqType;
reqTypeSpecifiedCb_.Checked = item.ReqType != null;
maxAgeCtrl_.Value = (item.MaxAgeSpecified)?((decimal)item.MaxAge) / 1000:0;
maxAgeSpecifiedCb_.Checked = item.MaxAgeSpecified;
activeCb_.Checked = (item.ActiveSpecified)?item.Active:false;
activeSpecifiedCb_.Checked = item.ActiveSpecified;
deadbandCtrl_.Value = (item.DeadbandSpecified)?(decimal)item.Deadband:0;
deadbandSpecifiedCb_.Checked = item.DeadbandSpecified;
samplingRateCtrl_.Value = (item.SamplingRateSpecified)?(decimal)item.SamplingRate:0;
samplingRateSpecifiedCb_.Checked = item.SamplingRateSpecified;
enableBufferingCb_.Checked = (item.EnableBufferingSpecified)?item.EnableBuffering:false;
enableBufferSpecifiedCb_.Checked = item.EnableBufferingSpecified;
reqTypePn_.Visible = true;
complexItemPn_.Visible = false;
// initialize complex data controls.
try
{
SetComplexItem(mIdentifier_);
}
catch (Exception e)
{
MessageBox.Show(e.Message);
reqTypePn_.Visible = true;
complexItemPn_.Visible = false;
}
}
/// <summary>
/// Copy object values into controls.
/// </summary>
public void Set(object value)
{
// check for null value.
if (value == null)
{
SetDefaults(); return;
}
// cast value to item object.
TsCDaItem item = (TsCDaItem)value;
// save item identifier (including client and server handles).
m_identifier = new OpcItem(item);
// update controls.
ItemNameTB.Text = item.ItemName;
ItemPathTB.Text = item.ItemPath;
ReqTypeCTRL.SelectedType = item.ReqType;
ReqTypeSpecifiedCB.Checked = item.ReqType != null;
MaxAgeCTRL.Value = (item.MaxAgeSpecified)?((decimal)item.MaxAge) / 1000:0;
MaxAgeSpecifiedCB.Checked = item.MaxAgeSpecified;
ActiveCB.Checked = (item.ActiveSpecified)?item.Active:false;
ActiveSpecifiedCB.Checked = item.ActiveSpecified;
DeadbandCTRL.Value = (item.DeadbandSpecified)?(decimal)item.Deadband:0;
DeadbandSpecifiedCB.Checked = item.DeadbandSpecified;
SamplingRateCTRL.Value = (item.SamplingRateSpecified)?(decimal)item.SamplingRate:0;
SamplingRateSpecifiedCB.Checked = item.SamplingRateSpecified;
EnableBufferingCB.Checked = (item.EnableBufferingSpecified)?item.EnableBuffering:false;
EnableBufferSpecifiedCB.Checked = item.EnableBufferingSpecified;
ReqTypePN.Visible = true;
ComplexItemPN.Visible = false;
// initialize complex data controls.
try
{
SetComplexItem(m_identifier);
}
catch (Exception e)
{
MessageBox.Show(e.Message);
ReqTypePN.Visible = true;
ComplexItemPN.Visible = false;
}
}
//----------------------------------------------------------------------------------------------------------------------
// btnAddItem_Click
//--------------------
// This method tries to add the specified item to the preceding added group object.
//----------------------------------------------------------------------------------------------------------------------
private void btnAddItem_Click(object sender, System.EventArgs e)
{
try
{
TsCDaSubscriptionState groupState = new TsCDaSubscriptionState();
groupState.Name = "MyGroup"; // Group Name
m_pOpcGroup = (TsCDaSubscription)m_OpcDaServer.CreateSubscription(groupState);
TsCDaItemResult[] res;
TsCDaItem[] items = new TsCDaItem[1];
items[0] = new TsCDaItem();
items[0].ItemName = txtboxOpcItem.Text; // Item Name
items[0].ClientHandle = 100; // Client Handle
res = m_pOpcGroup.AddItems(items);
if (res[0].Result.IsSuccess())
{
if (!(res[0].Result.IsOk())) // Note: Since this sample adds only one item it's required that AddItems()
{
return; // succeeds for all specified items (in this case only one).
}
else
{
m_arAddedItems = res;
}
}
else
{
MessageBox.Show("AddItems() method failed: " + res[0].Result.Description(), "Error", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
}
/// All succeeded, update buttons and text fields
txtboxOpcItem.Enabled = false;
btnAddItem.Enabled = false;
btnRead.Enabled = true;
btnWrite.Enabled = true;
txtboxWrite.Enabled = true;
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
}
}
/// <summary>
/// Toggles the active state of a subscription.
/// </summary>
private void SetActive(TreeNode node, TsCDaSubscription subscription, TsCDaItem item, bool active)
{
try
{
item.Active = active;
item.ActiveSpecified = true;
TsCDaItem[] items = subscription.ModifyItems((int)TsCDaStateMask.Active, new TsCDaItem[] { item });
if (items != null)
{
node.Tag = items[0];
}
}
catch (Exception e)
{
MessageBox.Show(e.Message);
}
}
/// <summary>
/// Prompts the user to edit the item list parameters.
/// </summary>
public TsCDaItem[] ShowDialog(TsCDaItem[] items, bool isReadItems, bool allowEditItemId)
{
objectCtrl_.IsReadItem = isReadItems;
objectCtrl_.AllowEditItemId = allowEditItemId;
if (items == null)
{
items = new TsCDaItem[] { (TsCDaItem)objectCtrl_.Create() }
}
;
ArrayList results = base.ShowDialog((object[])items, !allowEditItemId);
if (results != null && results.Count > 0)
{
return((TsCDaItem[])results.ToArray(typeof(TsCDaItem)));
}
return(null);
}
}
//----------------------------------------------------------------------------------------------------------------------
// btnAddItem_Click
//--------------------
// This method tries to add the specified item to the preceding added group object.
//----------------------------------------------------------------------------------------------------------------------
private void btnAddItem_Click(object sender, System.EventArgs e)
{
try
{
TsCDaSubscriptionState groupState = new TsCDaSubscriptionState();
groupState.Name = "MyGroup"; // Group Name
groupState.ClientHandle = "test";
groupState.Deadband = 0;
groupState.UpdateRate = 1000;
groupState.KeepAlive = 10000;
m_pOpcGroup = (TsCDaSubscription)m_OpcDaServer.CreateSubscription(groupState);
TsCDaItemResult[] itemResults;
TsCDaItem[] items = new TsCDaItem[1];
items[0] = new TsCDaItem();
items[0].ItemName = txtboxOpcItem.Text; // Item Name
items[0].ClientHandle = 100; // Client Handle
itemResults = m_pOpcGroup.AddItems(items);
m_arAddedItems = itemResults;
/// Activate data change subscription
m_pOpcGroup.DataChangedEvent += new TsCDaDataChangedEventHandler(DataChangeHandler);
/// All succeeded, update buttons and text fields
txtboxOpcItem.Enabled = false;
btnAddItem.Enabled = false;
btnRead.Enabled = true;
btnRefresh.Enabled = true;
btnCancel.Enabled = true;
btnWrite.Enabled = true;
txtboxWrite.Enabled = true;
chboxNotifications.Enabled = true;
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
}
}
private void TestMI_Click(object sender, System.EventArgs e)
{
try
{
TsCDaServer server = (TsCDaServer)m_server;
TsCDaItem[] items = new TsCDaItem[100];
for (int ii = 0; ii < items.Length; ii++)
{
items[ii] = new TsCDaItem();
items[ii].ItemName = "Static/ArrayTypes/Object[]";
items[ii].ItemPath = "DA30";
items[ii].ClientHandle = ii;
}
TsCDaSubscriptionState state = new TsCDaSubscriptionState();
state.Active = true;
state.UpdateRate = 1000;
ITsCDaSubscription subscription = server.CreateSubscription(state);
Thread.Sleep(100);
TsCDaItemResult[] results = subscription.AddItems(items);
Thread.Sleep(100);
subscription.RemoveItems(results);
Thread.Sleep(100);
server.CancelSubscription(subscription);
Thread.Sleep(100);
}
catch (Exception exception)
{
MessageBox.Show(exception.Message);
}
}
/// <summary>
/// Creates a new item.
/// </summary>
private void NewMI_Click(object sender, System.EventArgs e)
{
TsCDaItem template = null;
// copy the current selection.
if (ItemListLV.SelectedItems.Count > 0)
{
template = (TsCDaItem)((TsCDaItem)ItemListLV.SelectedItems[0].Tag).Clone();
}
// prompt user to edit new item.
TsCDaItem[] items = new ItemListEditDlg().ShowDialog(new TsCDaItem[] { template }, IsReadItem, true);
if (items == null)
{
return;
}
// add new items.
foreach (TsCDaItem item in items)
{
AddItem(item);
}
}
/// <summary>
/// Returns the value of the specified field.
/// </summary>
private object GetFieldValue(TsCDaItem item, int fieldID)
{
object fieldValue = null;
switch (fieldID)
{
// Item Path
case ITEM_PATH:
{
fieldValue = item.ItemPath;
break;
}
// Req Type
case REQUESTED_TYPE:
{
fieldValue = item.ReqType;
if (fieldValue == null)
{
fieldValue = m_template.ReqType;
}
break;
}
// Max Age
case MAXIMUM_AGE:
{
fieldValue = (item.MaxAgeSpecified)?item.MaxAge:fieldValue;
if (fieldValue == null)
{
fieldValue = (m_template.MaxAgeSpecified)?m_template.MaxAge:fieldValue;
}
break;
}
// Active
case ACTIVE:
{
fieldValue = (item.ActiveSpecified)?item.Active:fieldValue;
if (fieldValue == null)
{
fieldValue = (m_template.ActiveSpecified)?m_template.Active:fieldValue;
}
break;
}
// Deadband
case DEADBAND:
{
fieldValue = (item.DeadbandSpecified)?item.Deadband:fieldValue;
if (fieldValue == null)
{
fieldValue = (m_template.DeadbandSpecified)?m_template.Deadband:fieldValue;
}
break;
}
// Sampling Rate
case SAMPLING_RATE:
{
fieldValue = (item.SamplingRateSpecified)?item.SamplingRate:fieldValue;
if (fieldValue == null)
{
fieldValue = (m_template.SamplingRateSpecified)?m_template.SamplingRate:fieldValue;
}
break;
}
// Enable Buffering
case ENABLE_BUFFERING:
{
fieldValue = (item.EnableBufferingSpecified)?item.EnableBuffering:fieldValue;
if (fieldValue == null)
{
fieldValue = (m_template.EnableBufferingSpecified)?m_template.EnableBuffering:fieldValue;
}
break;
}
}
return(fieldValue);
}
void OnCreateSubscription()
{
// Создаём объект подписки
var subscriptionState = new TsCDaSubscriptionState
{
Name = "MySubscription",
ClientHandle = "MySubscriptionId",
Deadband = 0,
UpdateRate = 1000,
KeepAlive = 10000
};
_activeSubscription = (TsCDaSubscription)_activeOpcServer.CreateSubscription(subscriptionState);
// Добавляем в объект подписки выбранные теги
var x = 0;
List<TsCDaItem> list = new List<TsCDaItem>();
foreach (var item in CheckedTags)
{
var tag = new TsCDaItem
{
ItemName = item.Element.ItemName,
ClientHandle = 100 + x // Уникальный Id определяемый пользователем
};
list.Add(tag);
++x;
}
// Добавляем теги и проверяем результат данной операции
var results = _activeSubscription.AddItems(list.ToArray());
var errors = results.Where(result => result.Result.IsError());
if (errors.Count() > 0)
{
StringBuilder msg = new StringBuilder();
msg.Append("Не удалось добавить теги для подписки. Возникли ошибки в тегах:");
foreach (var error in errors)
{
msg.Append(String.Format("ItemName={0} ClientHandle={1} Description={2}; ",
error.ItemName, error.ClientHandle, error.Result.Description()));
}
throw new InvalidOperationException(msg.ToString());
}
_activeSubscription.DataChangedEvent += _dataChangeEventHandler;
}
/// <summary>
/// Updates the state of context menu.
/// </summary>
private void SubscriptionTV_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
{
// ignore left button actions.
if (e.Button != MouseButtons.Right)
{
return;
}
// selects the item that was right clicked on.
TreeNode clickedNode = subscriptionTv_.GetNodeAt(e.X, e.Y);
// no item clicked on - do nothing.
if (clickedNode == null)
{
return;
}
// force selection to clicked node.
subscriptionTv_.SelectedNode = clickedNode;
// disable everything.
serverViewStatusMi_.Enabled = false;
serverBrowseItemsMi_.Enabled = false;
serverReadItemsMi_.Enabled = false;
serverWriteItemsMi_.Enabled = false;
serverDisconnectMi_.Enabled = false;
subscriptionCreateMi_.Enabled = false;
subscriptionDeleteMi_.Enabled = false;
subscriptionAddItemsMi_.Enabled = false;
subscriptionEditItemsMi_.Enabled = false;
subscriptionEditMi_.Enabled = false;
subscriptionReadMi_.Enabled = false;
subscriptionWriteMi_.Enabled = false;
subscriptionRefreshMi_.Enabled = false;
subscriptionActiveMi_.Enabled = false;
subscriptionEnabledMi_.Enabled = false;
itemEditMi_.Enabled = false;
itemRemoveMi_.Enabled = false;
if (IsServerNode(clickedNode))
{
subscriptionTv_.ContextMenuStrip = serverPopupMenu_;
serverViewStatusMi_.Enabled = true;
serverBrowseItemsMi_.Enabled = true;
serverReadItemsMi_.Enabled = true;
serverWriteItemsMi_.Enabled = true;
serverDisconnectMi_.Enabled = true;
subscriptionCreateMi_.Enabled = true;
return;
}
if (IsSubscriptionNode(clickedNode))
{
subscriptionTv_.ContextMenuStrip = subscriptionPopupMenu_;
subscriptionEditMi_.Enabled = true;
subscriptionDeleteMi_.Enabled = clickedNode.Parent != null;
subscriptionAddItemsMi_.Enabled = true;
subscriptionEditItemsMi_.Enabled = clickedNode.Parent != null;
subscriptionReadMi_.Enabled = clickedNode.Parent != null;
subscriptionWriteMi_.Enabled = clickedNode.Parent != null;
subscriptionRefreshMi_.Enabled = clickedNode.Parent != null;
subscriptionActiveMi_.Enabled = clickedNode.Parent != null;
subscriptionEnabledMi_.Enabled = clickedNode.Parent != null;
subscriptionActiveMi_.Checked = ((TsCDaSubscription)clickedNode.Tag).Active;
subscriptionEnabledMi_.Checked = ((TsCDaSubscription)clickedNode.Tag).Enabled;
return;
}
if (IsItemNode(clickedNode))
{
subscriptionTv_.ContextMenuStrip = itemPopupMenu_;
TsCDaItem item = (TsCDaItem)clickedNode.Tag;
itemEditMi_.Enabled = true;
itemRemoveMi_.Enabled = true;
itemActiveMi_.Checked = item.Active;
return;
}
}
///////////////////////////////////////////////////////////////////////
#region OPC Sample Functionality
void DoOPCCalls()
{
try
{
const string serverUrl = "opcda://localhost/Technosoftware.DaSample";
Console.WriteLine();
Console.WriteLine("Simple OPC DA Client based on the OPC DA/AE/HDA Client SDK .NET");
Console.WriteLine("--------------------------------------------------------------");
Console.Write(" Press <Enter> to connect to "); Console.WriteLine(serverUrl);
Console.ReadLine();
Console.WriteLine(" Please wait...");
//OpcBase.ValidateLicense("License Key");
TsCDaServer myDaServer = new TsCDaServer();
// Connect to the server
myDaServer.Connect(serverUrl);
OpcServerStatus status = myDaServer.GetServerStatus();
Console.WriteLine(" Connected, press <Enter> to create an active group object and add several items.");
Console.ReadLine();
// Add a group with default values Active = true and UpdateRate = 500ms
TsCDaSubscription group;
TsCDaSubscriptionState groupState = new TsCDaSubscriptionState {
Name = "MyGroup" /* Group Name*/
};
group = (TsCDaSubscription)myDaServer.CreateSubscription(groupState);
// Add Items
TsCDaItem[] items = new TsCDaItem[2];
TsCDaItemResult[] itemResults;
items[0] = new TsCDaItem();
items[0].ItemName = "SimpleTypes.InOut.Integer"; // Item Name
items[0].ClientHandle = 100; // Client Handle
items[0].Active = true;
items[0].ActiveSpecified = true;
items[1] = new TsCDaItem();
items[1].ItemName = "SimpleTypes.InOut.Short"; // Item Name
items[1].ClientHandle = 200; // Client Handle
items[1].Active = false;
items[1].ActiveSpecified = true;
TsCDaItem[] arAddedItems;
itemResults = group.AddItems(items);
for (int i = 0; i < itemResults.GetLength(0); i++)
{
if (itemResults[i].Result.IsError())
{
Console.WriteLine(String.Format(" Item {0} could not be added to the group", itemResults[i].ItemName));
}
}
arAddedItems = itemResults;
OpcItemResult[] res;
IOpcRequest m_ITRequest;
TsCDaItemValue[] arItemValues = new TsCDaItemValue[1];
arItemValues[0] = new TsCDaItemValue();
arItemValues[0].ClientHandle = 100;
arItemValues[0].ItemName = "SimpleTypes.InOut.Short";
int val = 0;
do
{
arItemValues[0].Value = val;
res = group.Write(arItemValues, 321, new TsCDaWriteCompleteEventHandler(OnWriteCompleteEvent), out m_ITRequest);
val++;
} while (val < 1000);
Console.ReadLine();
group.Dispose(); // optionally, it's not required
myDaServer.Disconnect(); // optionally, it's not required
Console.ReadLine();
Console.WriteLine(" Disconnected from the server.");
Console.WriteLine();
}
catch (OpcResultException e)
{
Console.WriteLine(" " + e.Message);
Console.ReadLine();
return;
}
catch (Exception e)
{
Console.WriteLine(" " + e.Message);
Console.ReadLine();
return;
}
}
public void Run()
{
try
{
const string serverUrl = "opcda://localhost/Technosoftware.DaSample";
Console.WriteLine();
Console.WriteLine("Simple OPC DA Client based on the OPC DA/AE/HDA Client SDK .NET Standard");
Console.WriteLine("------------------------------------------------------------------------");
Console.Write(" Press <Enter> to connect to "); Console.WriteLine(serverUrl);
Console.ReadLine();
Console.WriteLine(" Please wait...");
TsCDaServer myDaServer = new TsCDaServer();
// Connect to the server
myDaServer.Connect(serverUrl);
// Get the status from the server
OpcServerStatus status = myDaServer.GetServerStatus();
Console.WriteLine($" Status of Server is {status.ServerState}");
Console.WriteLine(" Connected, press <Enter> to create an active group object and add several items.");
Console.ReadLine();
// Add a group with default values Active = true and UpdateRate = 500ms
TsCDaSubscriptionState groupState = new TsCDaSubscriptionState {
Name = "MyGroup" /* Group Name*/
};
var group = (TsCDaSubscription)myDaServer.CreateSubscription(groupState);
// Add Items
TsCDaItem[] items = new TsCDaItem[4];
items[0] = new TsCDaItem
{
ItemName = "SimulatedData.Ramp",
ClientHandle = 100,
MaxAgeSpecified = true,
MaxAge = 0,
Active = true,
ActiveSpecified = true
};
// Item Name
// Client Handle
// Read from Cache
items[1] = new TsCDaItem
{
ItemName = "CTT.SimpleTypes.InOut.Integer",
ClientHandle = 150,
Active = true,
ActiveSpecified = true
};
// Item Name
// Client Handle
items[2] = new TsCDaItem
{
ItemName = "CTT.SimpleTypes.InOut.Short",
ClientHandle = 200,
Active = false,
ActiveSpecified = true
};
// Item Name
// Client Handle
items[3] = new TsCDaItem
{
ItemName = "CTT.Arrays.InOut.Word[]", ClientHandle = 250, Active = false, ActiveSpecified = true
};
// Item Name
// Client Handle
// Synchronous Read with server read function (DA 3.0) without a group
TsCDaItemValueResult[] itemValues = myDaServer.Read(items);
for (int i = 0; i < itemValues.GetLength(0); i++)
{
if (itemValues[i].Result.IsError())
{
Console.WriteLine($" Item {itemValues[i].ItemName} could not be read");
}
}
var itemResults = group.AddItems(items);
for (int i = 0; i < itemResults.GetLength(0); i++)
{
if (itemResults[i].Result.IsError())
{
Console.WriteLine($" Item {itemResults[i].ItemName} could not be added to the group");
}
}
Console.WriteLine("");
Console.WriteLine(" Group and items added, press <Enter> to create a data change subscription");
Console.WriteLine(" and press <Enter> again to deactivate the data change subscription.");
Console.WriteLine(" This stops the reception of data change notifications.");
Console.ReadLine();
group.DataChangedEvent += OnDataChangeEvent;
Console.ReadLine();
// Set group inactive
groupState.Active = false;
group.ModifyState((int)TsCDaStateMask.Active, groupState);
Console.WriteLine(" Data change subscription deactivated, press <Enter> to remove all");
Console.WriteLine(" and disconnect from the server.");
group.Dispose();
myDaServer.Disconnect();
myDaServer.Dispose();
Console.ReadLine();
Console.WriteLine(" Disconnected from the server.");
Console.WriteLine();
}
catch (OpcResultException e)
{
Console.WriteLine(" " + e.Message);
Console.ReadLine();
}
catch (Exception e)
{
Console.WriteLine(" " + e.Message);
Console.ReadLine();
}
}
/// <summary>
/// Returns the value of the specified field.
/// </summary>
private object GetFieldValue(TsCDaItem item, int fieldId)
{
object fieldValue = null;
switch (fieldId)
{
// Item Path
case ItemPath:
{
fieldValue = item.ItemPath;
break;
}
// Req Type
case RequestedType:
{
fieldValue = item.ReqType;
if (fieldValue == null)
{
fieldValue = mTemplate_.ReqType;
}
break;
}
// Max Age
case MaximumAge:
{
fieldValue = (item.MaxAgeSpecified)?item.MaxAge:fieldValue;
if (fieldValue == null)
{
fieldValue = (mTemplate_.MaxAgeSpecified)?mTemplate_.MaxAge:fieldValue;
}
break;
}
// Active
case Active:
{
fieldValue = (item.ActiveSpecified)?item.Active:fieldValue;
if (fieldValue == null)
{
fieldValue = (mTemplate_.ActiveSpecified)?mTemplate_.Active:fieldValue;
}
break;
}
// Deadband
case Deadband:
{
fieldValue = (item.DeadbandSpecified)?item.Deadband:fieldValue;
if (fieldValue == null)
{
fieldValue = (mTemplate_.DeadbandSpecified)?mTemplate_.Deadband:fieldValue;
}
break;
}
// Sampling Rate
case SamplingRate:
{
fieldValue = (item.SamplingRateSpecified)?item.SamplingRate:fieldValue;
if (fieldValue == null)
{
fieldValue = (mTemplate_.SamplingRateSpecified)?mTemplate_.SamplingRate:fieldValue;
}
break;
}
// Enable Buffering
case EnableBuffering:
{
fieldValue = (item.EnableBufferingSpecified)?item.EnableBuffering:fieldValue;
if (fieldValue == null)
{
fieldValue = (mTemplate_.EnableBufferingSpecified)?mTemplate_.EnableBuffering:fieldValue;
}
break;
}
}
return(fieldValue);
}
