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Capture click event for unbound checkbox
posted

I have tried searching the forums, but don't quite see the code for what I'm trying to do.  I have an web grid, and have added an unbound checkbox as the first column of the grid.  I have used this code:

gridAssigned.Columns.Insert(0, "UnAssign");

gridAssigned.Columns[0].Type = Infragistics.WebUI.UltraWebGrid.ColumnType.CheckBox;

gridAssigned.DisplayLayout.Bands[0].Columns[0].Header.Caption = "UnAssign";

That works fine.  I don't need to save the values or be able to select all or anything.  All I want to do now is capture the event as soon as a checkbox is clicked and perform some action.  I am just not sure how to do this.  Do I need to set AllowUpdate to true?  Do I need to add something in the InitializeComponent?  I created a sub called

protected void gridAssigned_CellChange(object sender, CellEventArgs e)

 and put my code in there, but it never hits that.  Any help would be greatly appreciated.

Thanks!


           

 

  • 45049
    posted

    One possible thought - your new column might not be tracked in the grid's ViewState.  Try the following instead:

    using Infragistics.WebUI.UltraWebGrid;
    ...
    UltraGridColumn newColumn = new UltraGridColumn(true); // this "true" parameter means "track me in ViewState"
    newColumn.Key = "UnAssign"; // this was previously done when you used the Columns.Insert() method
    newColumn.Header.Caption = "UnAssign";
    gridAssigned.Columns.Insert(0, newColumn);

    AllowUpdate should be set to true, either for the column, the whole band, or the whole grid; otherwise, you won't be able to change the checkbox's value.

    I think you're also handling the wrong event.  WebGrid doesn't have a server-side CellChange event as far as I can see, unless it's a deprecated event that we no longer use in current versions.  As it is, you may need to use a client-side event handler, since I don't think there's any server-side event that will be raised the moment the checkbox is checked.

    See if that helps.  If it does not, we may need more information on your setup.