Mein Gridview in asp.net C# -Zeilenbefehl wird nicht nach Update-Schaltfläche klicken klicken

Question

Ich habe Gridview mit ungebundener Datenquelle erstellt. Die Schaltflächen werden also dynamisch erstellt. Es gibt keine Interferenzen mit asp.net. Alle Dinge werden dynamisch gemacht. Aber der rowcommand in Gridview wird nicht ausgelöst, nachdem ich auf die Update-Schaltfläche geklickt habe. Können Sie plz helfen, dies zu tun.

namespace WebApplication1 
{ 
public partial class _Default : System.Web.UI.Page 
{ 
    DataTable dt; 
    LinkButton RC_1,RC_3,RC_4; 
    TextBox TX_01, TX_02, TX_03; 
    Button RC_2 ; 
    int rowindex,flag = 0; 
    protected void Page_Load(object sender, EventArgs e) 
    { 
     if (!Page.IsPostBack) 
     { 
      dt = new DataTable(); 
      MakeDataTable(); 
     } 
     else 
     { 
      dt = (DataTable)ViewState["DataTable"]; 
      BindGrid(); 
     } 
     ViewState["DataTable"] = dt; 
    } 

    protected void B_01_Click(object sender, EventArgs e) 
    { 
     AddToDataTable(); 
     BindGrid(); 
     ClearFormData(); 
     GV.Width = 10; 
    } 

    protected void B_02_Click(object sender, EventArgs e) 
    { 
     LB.Text = "Button 2 is clicked"; 
    } 

    protected void GV_RowDataBound(object sender, GridViewRowEventArgs e) 
    { 
     if (e.Row.RowType == DataControlRowType.DataRow) 
     { 
      RC_1 = new LinkButton(); 
      RC_2 = new Button(); 
      RC_1.ID = "id_edit" + e.Row.RowIndex; 
      RC_1.Text = "Edit"; 
      RC_2.ID = "id_delete" + e.Row.RowIndex; 
      RC_2.Text = "Delete"; 
      RC_2.CommandName = "CMD_Delete"; 
      RC_1.CommandName = "CMD_Edit" ; 
      RC_1.EnableViewState = true; 
      RC_2.EnableViewState = true; 
      //RC_1.Click += new EventHandler(RC_1_Click); 
      e.Row.Cells[3].Controls.Add(RC_1); 
      e.Row.Cells[4].Controls.Add(RC_2); 
     } 
    } 

    private void MakeDataTable() 
    { 
     dt.Columns.Add("Date", typeof(string)); 
     dt.Columns.Add("Time", typeof(string)); 
     dt.Columns.Add("Number", typeof(string)); 
     dt.Columns.Add("Edit", typeof(string)); 
     dt.Columns.Add("Name", typeof(string)); 
    } 
    private void AddToDataTable() 
    { 
     DataRow NRow = dt.NewRow(); 
     NRow[0] = TXT_01.Text; 
     NRow[1] = TXT_02.Text; 
     NRow[2] = TXT_03.Text; 
     dt.Rows.Add(NRow); 
    } 
    private void BindGrid() 
    { 
     GV.DataSource = dt; 
     GV.DataBind(); 
    } 
     private void ClearFormData() 
    { 
     TXT_01.Text = ""; 
     TXT_02.Text = ""; 
     TXT_03.Text = ""; 
    } 

     protected void GV_RowCommand(object sender, GridViewCommandEventArgs e) 
     { 
      if((e.CommandName) == "CMD_Update") 
      { 
       GridViewRow gvr_upd = (GridViewRow)(((LinkButton)e.CommandSource).NamingContainer); 
       rowindex = Convert.ToInt32(gvr_upd.RowIndex); 
       GV.Rows[rowindex].Cells[1].Controls.Remove(TX_02); 
       GV.Rows[rowindex].Cells[0].Text = TX_01.Text; 
       GV.Rows[rowindex].Cells[1].Text = "Sandesh"; 
       GV.Rows[rowindex].Cells[2].Text = TX_03.Text; 
       LB.Text = GV.Rows[rowindex].Cells[1].Text + " Updated Successfully "; 
       LB.Visible = true; 
      } 
      if ((e.CommandName) == "CMD_Delete") 
      { 
       GridViewRow gvr_del = (GridViewRow)(((Button)e.CommandSource).NamingContainer); 
       rowindex = Convert.ToInt32(gvr_del.RowIndex) ; 
       dt.Rows.RemoveAt(rowindex); 
       BindGrid(); 
       LB.Text = (rowindex + 1) + " Deleted Successfully "; 
       LB.Visible = true; 
      } 
      if ((e.CommandName) == "CMD_Edit") 
      { 
       GridViewRow gvr_edit = (GridViewRow)(((LinkButton)e.CommandSource).NamingContainer); 
       rowindex = Convert.ToInt32(gvr_edit.RowIndex); 
       RC_3 = new LinkButton(); 
       RC_4 = new LinkButton(); 
       TX_01 = new TextBox(); 
       TX_02 = new TextBox(); 
       TX_03 = new TextBox(); 
       RC_3.ID = "id_update" + rowindex; 
       RC_3.Text = "Update "; 
       RC_4.ID = "id_cancel" + rowindex; 
       RC_4.Text = "Cancel"; 
       RC_3.CommandName = "CMD_Update"; 
       RC_4.CommandName = "CMD_Cancel"; 
       RC_3.CausesValidation = false; 
       RC_3.EnableViewState = true; 
       RC_4.EnableViewState = true; 
       RC_3.Click += new EventHandler(RC_3_Click); 
       GV.Rows[rowindex].Cells[3].Text = ""; 
       GV.Rows[rowindex].Cells[3].Controls.Add(RC_3); 
       GV.Rows[rowindex].Cells[3].Controls.Add(RC_4); 
       TX_01.Text = GV.Rows[rowindex].Cells[0].Text; 
       TX_02.Text = GV.Rows[rowindex].Cells[1].Text; 
       TX_03.Text = GV.Rows[rowindex].Cells[2].Text; 
       GV.Rows[rowindex].Cells[0].Text = ""; 
       GV.Rows[rowindex].Cells[1].Text = ""; 
       GV.Rows[rowindex].Cells[2].Text = ""; 
       GV.Rows[rowindex].Cells[0].Controls.Add(TX_01); 
       GV.Rows[rowindex].Cells[1].Controls.Add(TX_02); 
       GV.Rows[rowindex].Cells[2].Controls.Add(TX_03); 
      } 
     } 

     protected void RC_3_Click(object sender, EventArgs e) 
     { 
       LB.Text = " Vishwas Updated Successfully "; 
       LB.Visible = true; 
     } 

     protected void RC_3_Cclick() 
     { 
       LB.Text = " Updated Successfully "; 
       LB.Visible = true; 
     } 

} 
} 

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="WebApplication1._Default" EnableSessionState="True" %> 

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 

<html xmlns="http://www.w3.org/1999/xhtml" > 
<head runat="server"> 
    <title>Testing Page</title> 
</head> 
<body> 
    <form id="form1" runat="server"> 
    <div> 

     <asp:TextBox ID="TXT_01" runat="server" MaxLength="10" Width="128px"></asp:TextBox> 
     <asp:TextBox ID="TXT_02" runat="server"></asp:TextBox> 
     <asp:TextBox ID="TXT_03" runat="server"></asp:TextBox> 
     <asp:Button ID="B_01" runat="server" onclick="B_01_Click" Text="Button" /> 
     <asp:Button ID="B_02" runat="server" onclick="B_02_Click" Text="Button" /> 
     <asp:Label ID="LB" runat="server">&quot;Hi Answer&quot;</asp:Label> 
     <br /> 

    </div> 
    <asp:GridView ID="GV" runat="server" PageIndex="1" 
     Width="309px" EmptyDataText="&quot;No Data&quot;" Font-Names="Arial" ForeColor="Black" 
     UseAccessibleHeader="False" PageSize="5" 
     onrowcommand="GV_RowCommand" onrowdatabound="GV_RowDataBound" 
     EnableViewState="False"> 
     <RowStyle Font-Names="Arial Black" /> 
     <EditRowStyle ForeColor="Black" Font-Names="Arial Black" Font-Size="Medium" /> 
     </asp:GridView> 
    </form> 
</body> 
</html> 

Answer 1

können Sie anhängen Eventhandler Ereignis in GridView vor databind() in bind-Methode.

Answer 2

Delegaten sind die beste Option beim Erstellen dynamischer Steuerelemente. Bitte überprüfen Sie den unten stehenden Code, den ich in meiner Anwendung für dynamische Steuerelemente verwende: