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 · Accepted Answer · 2009-04-02 18:17:30Z

1

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);
}

answered Apr 2, 2009 at 18:17

Ruslan

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Comments

womp · Accepted Answer · 2009-04-02 05:11:35Z

0

If your checkbox ID's are not being set the same way on every postback, then they can never be connected to the event handlers when it comes time to process the events. Where is your field "id" coming from?

answered Apr 2, 2009 at 5:11

womp

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