private void stringSetButton_Click(object sender, EventArgs e)
{
// The user is setting a String attribute
try
{
if (tree.SelectedNode != null && tree.SelectedNode.Tag is ImaqdxAttribute)
{
ImaqdxStringAttribute attribute = (ImaqdxStringAttribute)tree.SelectedNode.Tag;
attribute.Value = stringControl.Text;
}
}
catch (Exception error)
{
MessageBox.Show(error.ToString(), "NI-IMAQdx Error");
}
}
private void UpdateItem(ImaqdxAttribute attribute)
{
attributeInfo.Clear();
// If we are not displaying any attribute, switch to the empty tab
// and return
if (attribute == null)
{
tabControl.SelectedIndex = tabControl.TabPages.IndexOf(emptyPage);
return;
}
// Show some useful generic information about the attribute
attributeInfo.Text += "Name: " + attribute.Name + "\r\n";
attributeInfo.Text += "Display Name: " + attribute.DisplayName + "\r\n";
attributeInfo.Text += "Description: " + attribute.Description + "\r\n";
attributeInfo.Text += "ToolTip: " + attribute.Tooltip + "\r\n";
attributeInfo.Text += "Units: " + attribute.Units + "\r\n";
attributeInfo.Text += "Type: " + attribute.Type.ToString() + "\r\n";
attributeInfo.Text += "Access: " + (attribute.Readable ? "R" : "") + (attribute.Writable ? "W" : "") + "\r\n";
attributeInfo.Text += "Visibility: " + attribute.Visibility.ToString() + "\r\n";
// Now we need to go through each of the basic types that need different
// controls populated. We use different tabs to contain the different
// controls to easily hide the ones not in use. While the base ImaqdxAttribute
// class will let you access the attribute in a basic fashion, to get all the
// functionality we need to cast it to a more specific type
if (attribute is ImaqdxEnumAttribute)
{
// This is an enumeration so switch to the Enum page
ImaqdxEnumAttribute enumAttribute = (ImaqdxEnumAttribute)attribute;
tabControl.SelectedIndex = tabControl.TabPages.IndexOf(enumPage);
// Update the combobox with all the available enumerations
enumItemsBox.Items.Clear();
enumItemsBox.Items.AddRange(enumAttribute.GetSupportedValues());
// If the attribute is readable, set the currently active value
if (enumAttribute.Readable)
{
enumItemsBox.SelectedItem = enumAttribute.Value;
}
// If the attribute is writable, enable the control
enumItemsBox.Enabled = enumAttribute.Writable;
}
else if (attribute is ImaqdxNumericAttribute)
{
// This is a numeric attribute so switch to the Numeric page
// Note that there are several different numeric types but we can treat
// them more or less the same. The numeric attribute type uses the "decimal"
// type which can contain most reasonable values of all the different types
// (UInt32, Int64, Double)
ImaqdxNumericAttribute numericAttribute = (ImaqdxNumericAttribute)attribute;
tabControl.SelectedIndex = tabControl.TabPages.IndexOf(numericPage);
rangeLabel.Text = "Min: " + numericAttribute.Minimum.ToString() + "\r\n";
rangeLabel.Text += "Max: " + numericAttribute.Maximum.ToString() + "\r\n";
rangeLabel.Text += "Increment: " + numericAttribute.Increment.ToString();
numericControl.Minimum = (decimal)numericAttribute.Minimum;
numericControl.Maximum = (decimal)numericAttribute.Maximum;
numericControl.Increment = (decimal)numericAttribute.Increment;
// We'll only show decimal places if it is a double attribute. All the rest
// are integer types
numericControl.DecimalPlaces = numericAttribute is ImaqdxDoubleAttribute ? 5 : 0;
// If the attribute is readable, set the currently active value
if (numericAttribute.Readable)
{
numericControl.Value = (decimal)numericAttribute.Value;
}
// If the attribute is writable, enable the control
numericControl.Enabled = numericAttribute.Writable;
}
else if (attribute is ImaqdxStringAttribute)
{
// This is a string attribute so switch to the String page
ImaqdxStringAttribute stringAttribute = (ImaqdxStringAttribute)attribute;
tabControl.SelectedIndex = tabControl.TabPages.IndexOf(stringPage);
stringControl.Clear();
// If the attribute is readable, set the currently active value
if (stringAttribute.Readable)
{
stringControl.Text = stringAttribute.Value;
}
// If the attribute is writable, enable the control
stringControl.Enabled = stringSetButton.Enabled = stringAttribute.Writable;
}
else if (attribute is ImaqdxBoolAttribute)
{
// This is a bool attribute so switch to the Bool page
ImaqdxBoolAttribute boolAttribute = (ImaqdxBoolAttribute)attribute;
tabControl.SelectedIndex = tabControl.TabPages.IndexOf(boolPage);
// If the attribute is readable, set the currently active value
if (boolAttribute.Readable)
{
boolControl.Checked = boolAttribute.Value;
}
// If the attribute is writable, enable the control
boolControl.Enabled = boolAttribute.Writable;
}
else if (attribute is ImaqdxCommandAttribute)
{
// This is a command attribute so switch to the Command page
ImaqdxCommandAttribute commandAttribute = (ImaqdxCommandAttribute)attribute;
tabControl.SelectedIndex = tabControl.TabPages.IndexOf(commandPage);
// If the attribute is writable, enable the control
commandControl.Enabled = commandAttribute.Writable;
}
}
