Go4Expert - example of editing in DataGrid and Default Paging

This is an example of editing in DataGrid and Default Paging

Html Design Code : -

HTML Code:

<asp:DataGrid id="DataGrid1" DataKeyField="id"        runat="server" Height="224px" AutoGenerateColumns="False" PageSize="5" AllowPaging="True">

        <Columns>

                <asp:BoundColumn Visible="False" DataField="id"

                        HeaderText="Category Id">

                </asp:BoundColumn>

                <asp:TemplateColumn HeaderText="Category">

                        <ItemTemplate>

                                <asp:Label id=lblName text='<%# DataBinder.Eval(Container.DataItem,"name")%>' Runat="server">

                                </asp:Label>

                        </ItemTemplate>

                        <EditItemTemplate>

                                <asp:TextBox id=txtEdit Runat="server" Text='<%# DataBinder.Eval(Container.DataItem,"name")%>'>

                                </asp:TextBox>

                        </EditItemTemplate>

                </asp:TemplateColumn>

                <asp:EditCommandColumn ButtonType="LinkButton" UpdateText="Update" HeaderText="Edit" CancelText="Cancel"

        EditText="Edit"></asp:EditCommandColumn>

        </Columns>

</asp:DataGrid>

Code (EditInDataGrid.aspx.cs) :

Code: ASP

private void Page_Load(object sender, System.EventArgs e)
{
    // Put user code to initialize the page here
    if(!IsPostBack)
    {
        
        BindGrid();
    }
}
private void DataGrid1_EditCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
{
    DataGrid1.EditItemIndex = e.Item.ItemIndex;
    BindGrid();
    
}
private void BindGrid()
{
    SqlDataAdapter da = new SqlDataAdapter("select id,name from category",con);
    DataSet objDS = new DataSet();
    try
    {
        da.Fill(objDS,"Cat");
        if(objDS.Tables[0].Rows.Count != 0)
        {
            DataGrid1.DataSource = objDS;
            DataGrid1.DataBind();
        }
        else
        {
            DataGrid1.DataSource = null;
            DataGrid1.DataBind();
            
            Response.Write("No record found.");
        }
    }
    catch(Exception ex)
    {
        throw ex;
    }
}

private void DataGrid1_UpdateCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
{
    try
    {
        string strCatName = ((TextBox)e.Item.FindControl("txtEdit")).Text;
        string strId = DataGrid1.DataKeys[e.Item.ItemIndex].ToString();
        SqlCommand com = new SqlCommand("update category set name ='"+strCatName+"' where id = "+strId,con);
        con.Open();
        com.ExecuteNonQuery();
        DataGrid1.EditItemIndex = -1;
        BindGrid();
    }
    catch(Exception ex)
    {
        throw ex;
    }
}

private void DataGrid1_CancelCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
{
    DataGrid1.EditItemIndex = -1;
    BindGrid();
}

private void DataGrid1_PageIndexChanged(object source, System.Web.UI.WebControls.DataGridPageChangedEventArgs e)
{
    DataGrid1.CurrentPageIndex = e.NewPageIndex;
    BindGrid();
}