Adding a click event to a dynamically generated button in a gridview

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I am adding buttons to my gridview onRowDataBound Event

C#

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
        {
            if (e.Row.RowType == DataControlRowType.DataRow)
            {
                var firstCell = e.Row.Cells[1];
                firstCell.Controls.Clear();
                Button btn_Check = new Button();
                btn_Check.ID = "btn_Check";
                btn_Check.Text = firstCell.Text;
                btn_Check.Click += new EventHandler(btn_Check_Click);
                firstCell.Controls.Add(btn_Check);
            }
        }
        protected void btn_Check_Click(object sender, EventArgs e)
        {
            Response.Write("btn_Check_Click event called");
        }

but on clicking the button the btn_Check_Click event is never called.

how to make the button.Click call btn_Check_Click?

Posted 27-Jun-13 23:34pm

maverick12131

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_Amy · Accepted Answer · 2013-06-27T23:54:00

Solution 1

You should add dynamic controls in RowCreated[^] event of the GridView. This will create controls at DataBinding and as well as when rebuilding a page on PostBack.
Try this:

C#

protected void GridView1_RowCreated(object sender, GridViewRowEventArgs e)
{
    if (e.Row.RowType == DataControlRowType.DataRow)
    {
        var firstCell = e.Row.Cells[1];
        firstCell.Controls.Clear();
        Button btn_Check = new Button();
        btn_Check.ID = "btn_Check";
        btn_Check.Text = firstCell.Text;
        btn_Check.Click += new EventHandler(btn_Check_Click);
        firstCell.Controls.Add(btn_Check);
    }
}

protected void btn_Check_Click(object sender, EventArgs e)
{
    Response.Write("btn_Check_Click event called");
}

--Amit

Posted 27-Jun-13 23:54pm

_Amy

Updated 27-Jun-13 23:55pm

v2

Comments

maverick12131 28-Jun-13 6:26am

the button is not getting added to the grid if I use GridView1_RowCreated instead of GridView1_RowDataBound.
Also In GridView1_RowDataBound button is added to the grid but it dosent call the btn_Check_Click method

_Amy 28-Jun-13 6:29am

Instead of Button Click Event, try assigning CommandName and handle the command in RowCommand event.

Masoom Mir 28-Jun-13 8:25am

+5

_Amy 28-Jun-13 13:34pm

Thank you. :)

maverick12131 1-Jul-13 1:37am

Now I am doing this.

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)

{ if (e.Row.RowType == DataControlRowType.DataRow)

{ var firstCell = e.Row.Cells[1];

firstCell.Controls.Clear();

Button btn_Check = new Button();

btn_Check.ID = "btn_Check";

btn_Check.Text = firstCell.Text;

btn_Check.CommandArgument = btn_Check.ID;

btn_Check.CommandName = "Check";

firstCell.Controls.Add(btn_Check); } }

protected void GridView1_OnRowCommand(object sender, GridViewCommandEventArgs e)

{ Response.Write("btn_Check Click event called"); }

But still nothing happens on the click of the button in the grid
Also the GridView1_OnRowCommand is never called on the button click