Hi,
I have a WebDataGrid with a programmatically added template column, which contains a Button; everything works fine, except that the ItemCommand event does not fire when the user clicks the button.
Here is the code (I am using the webdatagrid in a CompositeContro, and setting DataSource and calling DataBind from the pagel):
public class MyGrid : CompositeControl { private WebDataGrid _grid = new WebDataGrid(); public MyGrid() { _grid.AutoGenerateColumns = false; _grid.Columns.Add(new TemplateDataField() { Key = "MyButtonTemplate", Width = Unit.Pixel(100) }); _grid.Columns[0].Header.Text = "my template"; ItemTemplate itemTemplate1 = new ItemTemplate(); itemTemplate1.Template = new ButtonTemplate(); _grid.Templates.Add(itemTemplate1); ((ItemTemplate)_grid.Templates[_grid.Templates.Count - 1]).TemplateID = "myTemplate"; EnsureChildControls(); } protected override void CreateChildControls() { base.CreateChildControls(); Controls.Add(_grid); } protected override void OnInit(EventArgs e) { base.OnInit(e); _grid.ItemCommand += _grid_ItemCommand; } void _grid_ItemCommand(object sender, HandleCommandEventArgs e) { // not firing } protected override void OnLoad(EventArgs e) { base.OnLoad(e); ItemTemplate itemTemplate = (ItemTemplate)_grid.Templates[0]; for (int i = 0; i < _grid.Rows.Count; i++) { _grid.Rows[i].Items.FindItemByKey("MyButtonTemplate").Template = itemTemplate.Template; } } public DataTable DataSource { get { return _grid.DataSource as DataTable; } set { _grid.DataSource = value; } } }
The event fires when I create the template column directly in the grid definition (aspx).
How can I solve my problem?
Thanks in advance,
Giovanni
Hi zangrossi,
Thank you for posting in the community.
I have been looking into the behavior that you have described and I can suggest you to set the ItemTemplate using the following syntax:
_grid.Columns.Add(new TemplateDataField()
{
Key = "MyButtonTemplate",
Width = Unit.Pixel(100),
ItemTemplate = new CustomItemTemplate()
});
And create the CustomItemTemplate class – for example:
public class CustomItemTemplate : ITemplate
#region ITemplate Members
public void InstantiateIn(Control container)
LinkButton edit = new LinkButton();
edit.CssClass = "LinkButton";
edit.Text = "Edit";
edit.OnClientClick = "return editRow()";
container.Controls.Add(edit);
}
#endregion
For more information about dynamically adding ItemTemplates check the following link - http://help.infragistics.com/Help/NetAdvantage/ASPNET/2011.2/CLR4.0/html/WebDataGrid_Using_Item_Template.html. I tested your code with these modifications and the ItemCommand fired.
Please let me know if this helps.
Feel free to contact me if you have any questions.