(C#) ASP.NET MySQL Delete Record |
(C#) ASP.NET MySQL Delete Record เป็นตัวอย่างการเขียน ASP.NET กับ MySQL ในการลบข้อมูลในฐานข้อมูล
Instance NameSpace
C#Using System.Data;
Using MySql.Data.MySqlClient;
ASP.NET & MySql.Data.MySqlClient
Language Code : VB.NET ||  C#
AspNetMySQLDeleteRecord.aspx
<%@ Import Namespace="System.Data"%>
<%@ Import Namespace="MySql.Data.MySqlClient"%>
<%@ Page Language="C#" Debug="true" %>
<script runat="server">
MySqlConnection objConn = new MySqlConnection();
MySqlCommand objCmd = new MySqlCommand();
MySqlDataReader dtReader;
String strSQL;
void Page_Load(object sender,EventArgs e)
{
String strConnString;
strConnString = "Server=localhost;User Id=root; Password=root; Database=mydatabase; Pooling=false";
objConn = new MySqlConnection(strConnString);
objConn.Open();
if(!Page.IsPostBack)
{
BindData();
}
}
void BindData()
{
String strSQL;
strSQL = "SELECT * FROM customer";
MySqlDataReader dtReader;
objCmd = new MySqlCommand(strSQL, objConn);
dtReader = objCmd.ExecuteReader();
//*** BindData to Repeater ***//
myRepeater.DataSource = dtReader;
myRepeater.DataBind();
dtReader.Close();
dtReader = null;
}
void Page_UnLoad()
{
objConn.Close();
objConn = null;
}
void myRepeater_ItemCommand(Object source, RepeaterCommandEventArgs e)
{
if(e.CommandName == "Delete")
{
//*** CustomerID ***//
Label lblCustomerID = (Label)(e.Item.FindControl("lblCustomerID"));
strSQL = "DELETE FROM customer WHERE CustomerID = '"+ lblCustomerID.Text +"' ";
objCmd = new MySqlCommand(strSQL, objConn);
objCmd.ExecuteNonQuery();
BindData();
}
}
protected void myRepeater_ItemDataBound(Object sender, RepeaterItemEventArgs e)
{
//*** CustomerID ***//
Label lblCustomerID = (Label)(e.Item.FindControl("lblCustomerID"));
if (lblCustomerID != null)
{
lblCustomerID.Text = (string)DataBinder.Eval(e.Item.DataItem, "CustomerID");
}
//*** Email ***//
Label lblName = (Label)(e.Item.FindControl("lblName"));
if (lblName != null)
{
lblName.Text = (string)DataBinder.Eval(e.Item.DataItem, "Name");
}
//*** Name ***//
Label lblEmail = (Label)(e.Item.FindControl("lblEmail"));
if (lblEmail != null)
{
lblEmail.Text = (string)DataBinder.Eval(e.Item.DataItem, "Email");
}
//*** CountryCode ***//
Label lblCountryCode = (Label)(e.Item.FindControl("lblCountryCode"));
if (lblCountryCode != null)
{
lblCountryCode.Text = (string)DataBinder.Eval(e.Item.DataItem, "CountryCode");
}
//*** Budget ***//
Label lblBudget = (Label)(e.Item.FindControl("lblBudget"));
if (lblBudget != null)
{
lblBudget.Text = DataBinder.Eval(e.Item.DataItem, "Budget").ToString();
}
//*** Used ***//
Label lblUsed = (Label)(e.Item.FindControl("lblUsed"));
if (lblUsed != null)
{
lblUsed.Text = DataBinder.Eval(e.Item.DataItem, "Used").ToString();
}
//*** Delete ***//
LinkButton lnkDelete = (LinkButton)(e.Item.FindControl("lnkDelete"));
if (lnkDelete != null)
{
lnkDelete.Attributes.Add("OnClick", "return confirm('Delete Record?');");
}
}
</script>
<html>
<head>
<title>ThaiCreate.Com ASP.NET - MySql</title>
</head>
<body>
<form id="form1" runat="server">
<asp:Repeater id="myRepeater" runat="server"
OnItemDataBound="myRepeater_ItemDataBound"
OnItemCommand="myRepeater_ItemCommand">
<HeaderTemplate>
<table border="1">
<tr>
<th>CustomerID</th>
<th>Name</th>
<th>Email</th>
<th>CountryCode</th>
<th>Budget</th>
<th>Used</th>
<th>Delete</th>
</tr>
</HeaderTemplate>
<ItemTemplate>
<tr>
<td align="center"><asp:Label id="lblCustomerID" runat="server"></asp:Label></td>
<td><asp:Label id="lblName" runat="server"></asp:Label></td>
<td><asp:Label id="lblEmail" runat="server"></asp:Label></td>
<td align="center"><asp:Label id="lblCountryCode" runat="server"></asp:Label></td>
<td align="right"><asp:Label id="lblBudget" runat="server"></asp:Label></td>
<td align="right"><asp:Label id="lblUsed" runat="server"></asp:Label></td>
<td align="right"><asp:LinkButton id="lnkDelete" CommandName="Delete" runat="server">Delete</asp:LinkButton></td>
</tr>
</ItemTemplate>
</asp:Repeater>
</form>
</body>
</html>
Screenshot
ASP.NET MySql.Data.MySqlClient - Parameter Query
MySQL Relation CasCade
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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 : |
2008-10-26 22:59:00 /
2017-03-29 10:10:35 |
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