protected void FillColumnsPanel()
{
List <string> ignoreColumns = GetListOfIgnoreColumns();
string gridType = this.Parent.FindControl(AssociatedGridView).GetType().FullName;
GridTypeHF.Value = gridType;
ColumnCheckBoxList.Items.Clear();
//Get the columns count number and add the columns to the checklist.
GridView theGridView = null;
//RadGrid theRadGrid = null;
if (gridType == "System.Web.UI.WebControls.GridView")
{
// In the gridview we use the column number as the column name
theGridView = (GridView)this.Parent.FindControl(AssociatedGridView);
for (int i = 0; i < theGridView.Columns.Count; i++)
{
if (!ignoreColumns.Contains(i.ToString()))
{
ListItem theItem = new ListItem(theGridView.Columns[i].HeaderText,
i.ToString());
ColumnCheckBoxList.Items.Add(theItem);
}
}
}
//else if (gridType == "Telerik.Web.UI.RadGrid")
//{
// // In the Telerik grids we use the unique column name as the name of the column
// theRadGrid = (RadGrid)this.Parent.FindControl(AssociatedGridView);
// for (int i = 0; i < theRadGrid.Columns.Count; i++)
// if (!String.IsNullOrEmpty(theRadGrid.Columns[i].UniqueName) &&
// !ignoreColumns.Contains(theRadGrid.Columns[i].UniqueName))
// {
// ListItem theItem = new ListItem(theRadGrid.Columns[i].HeaderText,
// theRadGrid.Columns[i].UniqueName);
// ColumnCheckBoxList.Items.Add(theItem);
// }
//}
else
{
throw new Exception("Unknown Grid of type " + gridType);
}
//Get the current user
User theUser = null;
List <SelectionGridColumn> theColumnList = null;
try
{
theUser = UserBLL.GetUserByUsername(HttpContext.Current.User.Identity.Name);
if (theUser == null || theUser.UserId <= 0)
{
log.Error("Cannot get user from database.");
return;
}
UserIDHF.Value = theUser.UserId.ToString();
//Get the columns visibility by user by grid
GridColumnBLL theBLL = new GridColumnBLL();
theColumnList = theBLL.GetColumnsByGridByUser(AssociatedGridView, theUser.UserId);
}
catch (Exception q)
{
SystemMessages.DisplaySystemErrorMessage("Failed to load columns state for grid. Grid column selector disabled");
log.Error("Failed to get user details or column list", q);
this.Visible = false;
return;
}
// We add all these into a hashtable for quick lookup later.
Hashtable columnsHash = new Hashtable();
foreach (SelectionGridColumn col in theColumnList)
{
columnsHash.Add(col.Column, col);
}
//Id the list is null or empty, then all columns should keep the visibility initially
//specified in the Grid
if (theColumnList == null || theColumnList.Count <= 0)
{
foreach (ListItem theItem in ColumnCheckBoxList.Items)
{
bool visibility = false;
if (gridType == "System.Web.UI.WebControls.GridView")
{
visibility = theGridView.Columns[Convert.ToInt32(theItem.Value)].Visible;
}
//else if (gridType == "Telerik.Web.UI.RadGrid")
//{
// for (int i = 0; i < theRadGrid.Columns.Count; i++)
// if (theRadGrid.Columns[i].UniqueName == theItem.Value)
// {
// visibility = theRadGrid.Columns[i].Visible;
// break;
// }
//}
theItem.Selected = visibility;
}
}
else
{
//If the lists is not null then we set the correct value for each column
foreach (ListItem theItem in ColumnCheckBoxList.Items)
{
if (columnsHash.ContainsKey(theItem.Value))
{
SelectionGridColumn col = (SelectionGridColumn)columnsHash[theItem.Value];
theItem.Selected = col.Visible;
}
else
{
// We have a column that we did not store. That's visible.
theItem.Selected = true;
}
}
}
// Now initialize the Grid so the columns have the appropriate visibility
// Now change the column selection for the grid
if (gridType == "System.Web.UI.WebControls.GridView")
{
// In the gridview we use the column number as the column name
for (int i = 0; i < theGridView.Columns.Count; i++)
{
if (!ignoreColumns.Contains(i.ToString()) &&
columnsHash.ContainsKey(i.ToString()))
{
SelectionGridColumn theCol = (SelectionGridColumn)columnsHash[i.ToString()];
theGridView.Columns[i].Visible = theCol.Visible;
}
}
}
//else if (gridType == "Telerik.Web.UI.RadGrid")
//{
// // In the Telerik grids we use the unique column name as the name of the column
// for (int i = 0; i < theRadGrid.Columns.Count; i++)
// if (!ignoreColumns.Contains(theRadGrid.Columns[i].UniqueName) &&
// columnsHash.ContainsKey(theRadGrid.Columns[i].UniqueName))
// {
// SelectionGridColumn theCol = (SelectionGridColumn)columnsHash[theRadGrid.Columns[i].UniqueName];
// theRadGrid.Columns[i].Visible = theCol.Visible;
// }
//}
else
{
throw new Exception("Unknown Grid of type " + gridType);
}
}
protected void SaveVisibleButton_Click(object sender, EventArgs e)
{
List <SelectionGridColumn> theList = new List <SelectionGridColumn>();
string gridType = GridTypeHF.Value;
List <string> ignoreColumns = GetListOfIgnoreColumns();
if (ColumnCheckBoxList.Items.Count <= 0)
{
return;
}
// We add all the selections into a hashtable for quick lookup later.
Hashtable columnsHash = new Hashtable();
foreach (ListItem theItem in ColumnCheckBoxList.Items)
{
SelectionGridColumn thecol = new SelectionGridColumn(AssociatedGridView,
Convert.ToInt32(UserIDHF.Value), theItem.Value, theItem.Selected);
columnsHash.Add(thecol.Column, thecol);
theList.Add(thecol);
}
bool inserted = false;
try
{
// Try to save the visibility statos of the columns as stated by the user
GridColumnBLL theBLL = new GridColumnBLL();
inserted = theBLL.InsertColumns(theList);
}
catch (Exception q)
{
log.Error("Failed to save column visibility list", q);
}
if (!inserted)
{
log.Error("Cannot modify column visibility for activities grid");
SystemMessages.DisplaySystemErrorMessage("Failed to save column list to databse, please try again");
return;
}
// Now change the column selection for the grid
if (gridType == "System.Web.UI.WebControls.GridView")
{
// In the gridview we use the column number as the column name
GridView theGridView = (GridView)this.Parent.FindControl(AssociatedGridView);
for (int i = 0; i < theGridView.Columns.Count; i++)
{
if (!ignoreColumns.Contains(i.ToString()) &&
columnsHash.ContainsKey(i.ToString()))
{
SelectionGridColumn theCol = (SelectionGridColumn)columnsHash[i.ToString()];
theGridView.Columns[i].Visible = theCol.Visible;
}
}
}
//else if (gridType == "Telerik.Web.UI.RadGrid")
//{
// // In the Telerik grids we use the unique column name as the name of the column
// RadGrid theRadGrid = (RadGrid)this.Parent.FindControl(AssociatedGridView);
// for (int i = 0; i < theRadGrid.Columns.Count; i++)
// if (!ignoreColumns.Contains(theRadGrid.Columns[i].UniqueName) &&
// columnsHash.ContainsKey(theRadGrid.Columns[i].UniqueName))
// {
// SelectionGridColumn theCol = (SelectionGridColumn)columnsHash[theRadGrid.Columns[i].UniqueName];
// theRadGrid.Columns[i].Visible = theCol.Visible;
// }
//}
else
{
throw new Exception("Unknown Grid of type " + gridType);
}
// now fire the event that tells the page that we changed the grid rows, so they can choose to
// rebind if necessary
EventArgs theEventArgs = new EventArgs();
OnGridColumnsSelected(theEventArgs);
}
