[Solved] Dynamic ImageButton Click Event inside ASP.Net GridView not working (firing)

Hi robertrack,

You can not catch the event like the way you are doing.

Set the click event in aspx page.

HTML

<asp:ImageButton ID="ipb" runat="server" ImageUrl="~/BlueButton.jpg" />
<br />
<asp:Label ID="lbl" runat="server" Text="(Nothing yet)" />
<asp:GridView ID="gv" runat="server" AutoGenerateColumns="False"
    EmptyDataText="--==>> No Data Found <<==--" >
    <Columns>
        <asp:TemplateField>
            <HeaderTemplate>
                Name
            </HeaderTemplate>
            <ItemTemplate>
                <asp:Label ID="lblName" runat="server" Text='<%# Eval("Name") %>' />
            </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField>
            <HeaderTemplate>
                Buttons
            </HeaderTemplate>
            <ItemTemplate>
                <asp:ImageButton ID="ipbB" runat="server" ImageUrl="~/BlueButton.jpg" OnClick="ipbB_Click" />
            </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField>
            <HeaderTemplate>
                Result
            </HeaderTemplate>
            <ItemTemplate>
                <asp:Label ID="lblB" runat="server" Text="(Nothing Yet)" />
            </ItemTemplate>
        </asp:TemplateField>
    </Columns>
</asp:GridView>

Code

C#

protected void Page_Load(object sender, EventArgs e)
{
    ipb.Click += ipb_Click;

    if (!IsPostBack)
    {
        DataTable dt = new DataTable();
        dt.Columns.AddRange(new DataColumn[3] { new DataColumn("Id", typeof(int)),
                    new DataColumn("Name", typeof(string)),
                    new DataColumn("Country",typeof(string)) });
        dt.Rows.Add(1, "John Hammond", "United States");
        dt.Rows.Add(2, "Mudassar Khan", "India");
        dt.Rows.Add(3, "Suzanne Mathews", "France");
        dt.Rows.Add(4, "Robert Schidner", "Russia");
        gv.DataSource = dt;
        gv.DataBind();
    }
}

protected void ipb_Click(object sender, ImageClickEventArgs e)
{
    lbl.Text = "Button clicked " + DateTime.Now.ToString();
}

protected void ipbB_Click(object sender, ImageClickEventArgs e)
{
    ImageButton ib = (ImageButton)sender;
    GridViewRow gr = (GridViewRow)ib.NamingContainer;
    Label lblB = (Label)gr.FindControl("lblB");
    lblB.Text = "Button clicked " + DateTime.Now.ToString();
}

Else you have to use RowCommand event of the GridView control.

HTML

<asp:ImageButton ID="ipb" runat="server" ImageUrl="~/BlueButton.jpg" />
<br />
<asp:Label ID="lbl" runat="server" Text="(Nothing yet)" />
<asp:GridView ID="gv" runat="server" AutoGenerateColumns="False" EmptyDataText="--==>> No Data Found <<==--"
    OnRowCommand="GridView1_RowCommand">
    <Columns>
        <asp:TemplateField>
            <HeaderTemplate>
                Name
            </HeaderTemplate>
            <ItemTemplate>
                <asp:Label ID="lblName" runat="server" Text='<%# Eval("Name") %>' />
            </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField>
            <HeaderTemplate>
                Buttons
            </HeaderTemplate>
            <ItemTemplate>
                <asp:ImageButton ID="ipbB" runat="server" ImageUrl="~/BlueButton.jpg"
                    CommandName="Set" CommandArgument="<%# Container.DataItemIndex %>" />
            </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField>
            <HeaderTemplate>
                Result
            </HeaderTemplate>
            <ItemTemplate>
                <asp:Label ID="lblB" runat="server" Text="(Nothing Yet)" />
            </ItemTemplate>
        </asp:TemplateField>
    </Columns>
</asp:GridView>

Code

C#

protected void Page_Load(object sender, EventArgs e)
{
    ipb.Click += ipb_Click;

    if (!IsPostBack)
    {
        DataTable dt = new DataTable();
        dt.Columns.AddRange(new DataColumn[3] { new DataColumn("Id", typeof(int)),
                    new DataColumn("Name", typeof(string)),
                    new DataColumn("Country",typeof(string)) });
        dt.Rows.Add(1, "John Hammond", "United States");
        dt.Rows.Add(2, "Mudassar Khan", "India");
        dt.Rows.Add(3, "Suzanne Mathews", "France");
        dt.Rows.Add(4, "Robert Schidner", "Russia");
        gv.DataSource = dt;
        gv.DataBind();
    }
}

protected void ipb_Click(object sender, ImageClickEventArgs e)
{
    lbl.Text = "Button clicked " + DateTime.Now.ToString();
}

protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
{
    if (e.CommandName == "Set")
    {
        int rowIndex = Convert.ToInt32(e.CommandArgument);
        GridViewRow row = gv.Rows[rowIndex];
        Label lblB = (Label)row.FindControl("lblB");
        lblB.Text = "Button clicked " + DateTime.Now.ToString();
    }
}

Screenshot