(C#) ASP.NET GridView Control - VS 2005,2008,2010 (FX 2.0,3.5,4.0) |
(C#) ASP.NET GridView Control - Visual Studio 2005,2008,2010 (Framework 2.0,3.5,4.0) จากตัวอย่างก่อนหน้านี้จะเป็นการใช้งาน GridView และเขียนในรูปแบบของ ASP Style คือเขียนร่วมกับกับส่วนของ HTML Element แต่ในตัวอย่างนี้ผมได้ยกการเขียนร่วมกับ Visual Studio 2005,2008,2010 ซึ่ง Run บน Framework 2.0,3.5,4.0 ในรูปแบบของ Code-Behind แยกในส่วนของ Tag และ Code ไว้คนล่ะส่วน
Code นี้จะเป็นการ Add,Edit,Update และ Delete ข้อมูลในฐานข้อมูล
Language Code : VB.NET ||  C#
Framework : 2,3,4
GridView1.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="GridView1.aspx.cs" Inherits="GridView1" %>
<!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 id="Head1" runat="server">
<title>ThaiCreate.Com ASP.NET - GridView</title>
</head>
<body>
<form id="form1" runat="server">
<asp:GridView id="myGridView" runat="server" AutoGenerateColumns="False"
ShowFooter="True"
DataKeyNames="CustomerID"
OnRowCancelingEdit="modCancelCommand"
OnRowCommand="myGridView_RowCommand"
OnRowDeleting="modDeleteCommand"
OnRowEditing="modEditCommand"
OnRowUpdating="modUpdateCommand">
<Columns>
<asp:TemplateField HeaderText="CustomerID">
<ItemTemplate>
<asp:Label id="lblCustomerID" runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.CustomerID") %>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox id="txtEditCustomerID" size="5" runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.CustomerID") %>'></asp:TextBox>
</EditItemTemplate>
<FooterTemplate>
<asp:TextBox id="txtAddCustomerID" size="5" runat="server"></asp:TextBox>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Name">
<ItemTemplate>
<asp:Label id="lblName" runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.Name") %>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox id="txtEditName" size="10" runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.Name") %>'></asp:TextBox>
</EditItemTemplate>
<FooterTemplate>
<asp:TextBox id="txtAddName" size="10" runat="server"></asp:TextBox>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Email">
<ItemTemplate>
<asp:Label id="lblEmail" runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.Email") %>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox id="txtEditEmail" size="20" runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.Email") %>'></asp:TextBox>
</EditItemTemplate>
<FooterTemplate>
<asp:TextBox id="txtAddEmail" size="20" runat="server"></asp:TextBox>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="CountryCode">
<ItemTemplate>
<asp:Label id="lblCountryCode" runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.CountryCode") %>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox id="txtEditCountryCode" size="2" runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.CountryCode") %>'></asp:TextBox>
</EditItemTemplate>
<FooterTemplate>
<asp:TextBox id="txtAddCountryCode" size="2" runat="server"></asp:TextBox>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Budget">
<ItemTemplate>
<asp:Label id="lblBudget" runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.Budget") %>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox id="txtEditBudget" size="6" runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.Budget") %>'></asp:TextBox>
</EditItemTemplate>
<FooterTemplate>
<asp:TextBox id="txtAddBudget" size="6" runat="server"></asp:TextBox>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Used">
<ItemTemplate>
<asp:Label id="lblUsed" runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.Used") %>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox id="txtEditUsed" size="6" runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.Used") %>'></asp:TextBox>
</EditItemTemplate>
<FooterTemplate>
<asp:TextBox id="txtAddUsed" size="6" runat="server"></asp:TextBox>
<asp:Button id="btnAdd" runat="server" Text="Add" CommandName="Add"></asp:Button>
</FooterTemplate>
</asp:TemplateField>
<asp:CommandField ShowEditButton="True" CancelText="Cancel" DeleteText="Delete" EditText="Edit" UpdateText="Update" HeaderText="Modify" />
<asp:CommandField ShowDeleteButton="True" HeaderText="Delete" />
</Columns>
</asp:GridView>
</form>
</body>
</html>
GridView1.aspx.cs
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.OleDb;
public partial class GridView1 : System.Web.UI.Page
{
OleDbConnection objConn;
OleDbCommand objCmd;
String strSQL;
protected void Page_Load(object sender, EventArgs e)
{
String strConnString;
strConnString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" +
Server.MapPath("database/mydatabase.mdb") + ";";
objConn = new OleDbConnection(strConnString);
objConn.Open();
if (!Page.IsPostBack)
{
BindData();
}
}
protected void BindData()
{
String strSQL;
strSQL = "SELECT * FROM customer";
OleDbDataReader dtReader;
objCmd = new OleDbCommand(strSQL, objConn);
dtReader = objCmd.ExecuteReader();
//*** BindData to GridView ***//
myGridView.DataSource = dtReader;
myGridView.DataBind();
dtReader.Close();
dtReader = null;
}
protected void Page_UnLoad()
{
objConn.Close();
objConn = null;
}
protected void modEditCommand(object sender, GridViewEditEventArgs e)
{
myGridView.EditIndex = e.NewEditIndex;
myGridView.ShowFooter = false;
BindData();
}
protected void modCancelCommand(object sender, GridViewCancelEditEventArgs e)
{
myGridView.EditIndex = -1;
myGridView.ShowFooter = true;
BindData();
}
protected void modDeleteCommand(object sender, GridViewDeleteEventArgs e)
{
strSQL = "DELETE FROM customer WHERE CustomerID = '" + myGridView.DataKeys[e.RowIndex].Value + "'";
objCmd = new OleDbCommand(strSQL, objConn);
objCmd.ExecuteNonQuery();
myGridView.EditIndex = -1;
BindData();
}
protected void modUpdateCommand(object sender, GridViewUpdateEventArgs e)
{
//*** CustomerID ***//
TextBox txtCustomerID = (TextBox)myGridView.Rows[e.RowIndex].FindControl("txtEditCustomerID");
//*** Email ***//
TextBox txtName = (TextBox)myGridView.Rows[e.RowIndex].FindControl("txtEditName");
//*** Name ***//
TextBox txtEmail = (TextBox)myGridView.Rows[e.RowIndex].FindControl("txtEditEmail");
//*** CountryCode ***//
TextBox txtCountryCode = (TextBox)myGridView.Rows[e.RowIndex].FindControl("txtEditCountryCode");
//*** Budget ***//
TextBox txtBudget = (TextBox)myGridView.Rows[e.RowIndex].FindControl("txtEditBudget");
//*** Used ***//
TextBox txtUsed = (TextBox)myGridView.Rows[e.RowIndex].FindControl("txtEditUsed");
strSQL = "UPDATE customer SET CustomerID = '" + txtCustomerID.Text + "' " +
" ,Name = '" + txtName.Text + "' " +
" ,Email = '" + txtEmail.Text + "' " +
" ,CountryCode = '" + txtCountryCode.Text + "' " +
" ,Budget = '" + txtBudget.Text + "' " +
" ,Used = '" + txtUsed.Text + "' " +
" WHERE CustomerID = '" + myGridView.DataKeys[e.RowIndex].Value + "'";
objCmd = new OleDbCommand(strSQL, objConn);
objCmd.ExecuteNonQuery();
myGridView.EditIndex = -1;
myGridView.ShowFooter = true;
BindData();
}
protected void myGridView_RowCommand(object sender, GridViewCommandEventArgs e)
{
if (e.CommandName == "Add")
{
//*** CustomerID ***//
TextBox txtCustomerID = (TextBox)myGridView.FooterRow.FindControl("txtAddCustomerID");
//*** Email ***//
TextBox txtName = (TextBox)myGridView.FooterRow.FindControl("txtAddName");
//*** Name ***//
TextBox txtEmail = (TextBox)myGridView.FooterRow.FindControl("txtAddEmail");
//*** CountryCode ***//
TextBox txtCountryCode = (TextBox)myGridView.FooterRow.FindControl("txtAddCountryCode");
//*** Budget ***//
TextBox txtBudget = (TextBox)myGridView.FooterRow.FindControl("txtAddBudget");
//*** Used ***//
TextBox txtUsed = (TextBox)myGridView.FooterRow.FindControl("txtAddUsed");
strSQL = "INSERT INTO customer (CustomerID,Name,Email,CountryCode,Budget,Used) " +
" VALUES ('" + txtCustomerID.Text + "','" + txtName.Text + "','" + txtEmail.Text + "' " +
" ,'" + txtCountryCode.Text + "','" + txtBudget.Text + "','" + txtUsed.Text + "') ";
objCmd = new OleDbCommand(strSQL, objConn);
objCmd.ExecuteNonQuery();
BindData();
}
}
}
Screenshot
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 ช่วยกันสนับสนุนรักษาเว็บไซต์ความรู้แห่งนี้ไว้ด้วยการสนับสนุน Source Code 2.0 ของทีมงานไทยครีเอท
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By : |
ThaiCreate.Com Team (บทความเป็นลิขสิทธิ์ของเว็บไทยครีเอทห้ามนำเผยแพร่ ณ เว็บไซต์อื่น ๆ) |
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Score Rating : |
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Create/Update Date : |
2008-11-13 20:59:59 /
2017-03-28 21:21:35 |
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