How to use rowcommand in Asp.net gridview control

How to use RowCommand in Asp.net gridview control:

Asp.net Grid view control:

As we know that the gridview is more useful and powerful control in asp.net for display g

Gridview displays the value of a data source in a table. Here, I am going to give an example of using an event called "RowCommand". The RowCommand is raised when a button, LinkButton or ImageButton is clicked in the Gridview Control.data in tabular form.

he RowCommand event is raised when a button is clicked in the GridView control. This enables you to provide an event-handling method that performs a custom routine whenever this event occurs.

Buttons within a GridView control can also invoke some of the built-in functionality of the control. To perform one of these operations, set the CommandName property of a button to one of the values in the following table.

First we create a grid view with rowcomand event:

<asp:GridView ID="Grdcat" runat="server" AutoGenerateColumns="False" CellPadding="4"

                    Width="50%" EmptyDataRowStyle-Font-Bold="true" EmptyDataRowStyle-ForeColor="Red"

                    EmptyDataText="There is no Data." ForeColor="#333333" Height="196px" OnRowCommand="Grdcat_RowCommand"

                    OnRowDeleting="Grdcat_RowDeleting">

                    <RowStyle BackColor="White" />

                    <EmptyDataRowStyle Font-Bold="True" ForeColor="Red"></EmptyDataRowStyle>

                    <Columns>

                        <asp:TemplateField HeaderText="SNo" ItemStyle-HorizontalAlign="Center">

                            <ItemTemplate>

                                <%#Container.DataItemIndex+1 %>

                            </ItemTemplate>

                            <ItemStyle HorizontalAlign="Center"></ItemStyle>

                        </asp:TemplateField>

                        <asp:TemplateField ItemStyle-HorizontalAlign="Center" Visible="false">

                            <ItemTemplate>

                                <asp:Label ID="lblcatgryId" runat="server" Text='<%# Eval("catgryId") %>'></asp:Label>

                            </ItemTemplate>

                            <ItemStyle HorizontalAlign="Center"></ItemStyle>

                        </asp:TemplateField>

                        <asp:TemplateField HeaderText="Name" ItemStyle-HorizontalAlign="Center">

                            <ItemTemplate>

                                <asp:Label ID="lblcatgryName" runat="server" Text='<%# Eval("catgryName") %>'></asp:Label>

                            </ItemTemplate>

                            <ItemStyle HorizontalAlign="Center"></ItemStyle>

                        </asp:TemplateField>

                        <asp:TemplateField ItemStyle-HorizontalAlign="Center">

                            <ItemTemplate>

                                <asp:LinkButton ID="lnkshow" runat="server" CommandName="Delete" Font-Size="Larger"

                                    ForeColor="Brown" CommandArgument='<%#DataBinder.Eval(Container, "RowIndex")%>'

                                    Text="Delete"></asp:LinkButton>

                            </ItemTemplate>

<ItemStyle HorizontalAlign="Center"></ItemStyle>

                        </asp:TemplateField>

                      

                    </Columns>

                    <FooterStyle BackColor="#1C5E55" ForeColor="White" Font-Bold="True" />

                    <HeaderStyle BackColor="#0033cc" Font-Bold="True" ForeColor="White" Height="40px" />

                    <EditRowStyle BackColor="#7C6F57" />

                </asp:GridView>

The C# code bihaind this grid view control:

protected void Grdcat_RowCommand(object sender, GridViewCommandEventArgs e)

    {

        if (e.CommandName == "Delete")

        {

            int index = Convert.ToInt32(e.CommandArgument.ToString());

            Label ltrlslno = (Label)Grdcat.Rows[index].FindControl("lblcatgryId");

            // write code for use this value as you see here i want to delete this particular

            //item from data base then i need to write delete sql query here.

        }

    }

    protected void Grdcat_RowDeleting(object sender, GridViewDeleteEventArgs e)

    {

    }

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