CheckedChanged event for Dynamically generated Checkbox column in DataGrid(Asp.Net)

Question

I have a datagrid (Asp.Net) with dynamically generated checkbox column..I am not able to generate the checkedChanged event for the checkbox..

Here is my code:

public class ItemTemplate : ITemplate { //Instantiates the checkbox void ITemplate.InstantiateIn(Control container) { CheckBox box = new CheckBox();
box.CheckedChanged += new EventHandler(this.OnCheckChanged); box.AutoPostBack = true; box.EnableViewState = true; box.Text = text; box.ID = id; container.Controls.Add(box); }

public event EventHandler CheckedChanged;

private void OnCheckChanged(object sender, EventArgs e)
{
    if (CheckedChanged != null)
    {
        CheckedChanged(sender, e);
    }
}

}

and Here is the event

private void OnCheckChanged(object sender, EventArgs e) {

}

Thanks In advance

Ruslan Ruslan · Accepted Answer · 2009-04-02T18:17:30

When do you add your custom column? If it is on load, then it is too late. Load it on init. I.e. following works with your code:

protected void Page_Init(object sender, EventArgs e)
{
    ItemTemplate myTemplate = new ItemTemplate();
    myTemplate.CheckedChanged += new EventHandler(myTemplate_CheckedChanged);

    TemplateField col = new TemplateField();
    col.ItemTemplate = myTemplate;
    col.ItemStyle.Wrap = false;

    grid.Columns.Add(col);
}

CheckedChanged event for Dynamically generated Checkbox column in DataGrid(Asp.Net)

2 Answers