Hide Show ImageButton in GridView on another Button Click using C# in ASP.Net

Hi vincenzogagli...,

Check the below example.

HTML

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false" OnRowDataBound="OnRowDataBound">
    <Columns>
        <asp:BoundField DataField="Name" HeaderText="Name" />
        <asp:BoundField DataField="Country" HeaderText="Country" />
        <asp:TemplateField ItemStyle-HorizontalAlign="Center">
            <ItemTemplate>
                <asp:ImageButton ID="btnedit" runat="server"
                    CommandName="Edit" ToolTip="Edit row"
                    ImageUrl="/aspnet/img/edit_icon.gif"
                    OnClientClick="if (!confirm('Confirm?')) return false;" />
            </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField ItemStyle-HorizontalAlign="Center">
            <ItemTemplate>
                <asp:ImageButton ID="btrila" runat="server"
                    CommandArgument="1" OnClick="btrila_Click"
                    ImageUrl="/aspnet/img/rila_button.gif"
                    OnClientClick="if (!confirm('You are sure?')) return false;" />
            </ItemTemplate>
        </asp:TemplateField>
    </Columns>
</asp:GridView>

Code

protected void Page_Load(object sender, EventArgs e)
{
    if (!this.IsPostBack)
    {
        BindGrid();
    }
}

protected void btrila_Click(object sender, ImageClickEventArgs e)
{
    // Your code.
}

protected void OnRowDataBound(object sender, GridViewRowEventArgs e)
{
    if (e.Row.RowType == DataControlRowType.DataRow)
    {
        // Check for condition to hide Edit ImageButton.
        if (e.Row.Cells[0].Text != "0")
        {
            (e.Row.FindControl("btnedit") as ImageButton).Visible = false;
        }
        else
        {
            (e.Row.FindControl("btnedit") as ImageButton).Visible = true;
        }
    }
}

private void BindGrid()
{
    DataTable dt = new DataTable();
    dt.Columns.AddRange(new DataColumn[3]
    {
            new DataColumn("Id"),
            new DataColumn("Name"),
            new DataColumn("Country")
    });
    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");
    GridView1.DataSource = dt;
    GridView1.DataBind();
}