關於ASP.NET中GridView控制元件的編輯和刪除問題！
第一種直接用SqlDataSource繫結實現編輯和刪除！
<head runat="server">
<title>無標題頁</title>
</head>
<body>
<form id="form1" runat="server">
<asp:GridView ID="GridView1" runat="server" DataKeyNames="id" DataSourceID="SqlDataSource1" AutoGenerateDeleteButton="True" AutoGenerateEditButton="True" AutoGenerateColumns="False">
<Columns>
<asp:BoundField DataField="id" SortExpression="id" ReadOnly=true/>
<asp:BoundField DataField="name" SortExpression="name"/>
<asp:BoundField DataField="pwd" SortExpression="pwd" />
</Columns>
</asp:GridView>
<asp:SqlDataSource ID="SqlDataSource1" runat="server" ProviderName="System.Data.SqlClient" ConnectionString='server=.;uid=sa;database=test'
SelectCommand="select id,name,pwd from usertab" DeleteCommand="delete from usertab where id = @id"
UpdateCommand="update usertab set name = @name,pwd = @pwd where id = @id ">
<DeleteParameters>
<asp:ControlParameter ControlID="GridView1" Name="id" PropertyName="SelectedValue"/>
</DeleteParameters>
<UpdateParameters>
<asp:ControlParameter ControlID="GridView1" DefaultValue="id" Name="id" PropertyName="SelectedValue" />
<asp:ControlParameter ControlID="GridView1" DefaultValue="name" Name="name" PropertyName="SelectedValue" />
<asp:ControlParameter ControlID="GridView1" DefaultValue="pwd" Name="pwd" PropertyName="SelectedValue" />
</UpdateParameters>
</asp:SqlDataSource>
</form>
</body>
</html>
這個就是SqlDataSource和GridView的配合,
第二種是在後臺程式碼中實現的：
-------------------------------------------
using System;
using System.Data;
using System.Configuration;
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.SqlClient;
public partial class _Default : System.Web.UI.Page
{
SqlConnection sqlcon;
SqlCommand sqlcom;
string strCon = "Data Source=(local);Database=資料庫名;Uid=帳號;Pwd=密碼";
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
bind();
}
}
protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
{
GridView1.EditIndex = e.NewEditIndex;
bind();
}
//刪除
protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
string sqlstr = "delete from 表 where id='" + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";
sqlcon = new SqlConnection(strCon);
sqlcom = new SqlCommand(sqlstr,sqlcon);
sqlcon.Open();
sqlcom.ExecuteNonQuery();
sqlcon.Close();
bind();
}
//更新
protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
sqlcon = new SqlConnection(strCon);
string sqlstr = "update 表 set 欄位1='"
+ ((TextBox)(GridView1.Rows[e.RowIndex].Cells[1].Controls[0])).Text.ToString().Trim() + "',欄位2='"
+ ((TextBox)(GridView1.Rows[e.RowIndex].Cells[2].Controls[0])).Text.ToString().Trim() + "',欄位3='"
+ ((TextBox)(GridView1.Rows[e.RowIndex].Cells[3].Controls[0])).Text.ToString().Trim() + "' where id='"
+ GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";
sqlcom=new SqlCommand(sqlstr,sqlcon);
sqlcon.Open();
sqlcom.ExecuteNonQuery();
sqlcon.Close();
GridView1.EditIndex = -1;
bind();
}
//取消
protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
{
GridView1.EditIndex = -1;
bind();
}
//繫結
public void bind()
{
string sqlstr = "select * from 表";
sqlcon = new SqlConnection(strCon);
SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);
DataSet myds = new DataSet();
sqlcon.Open();
myda.Fill(myds, "表");
GridView1.DataSource = myds;
GridView1.DataKeyNames = new string[] { "id" };//主鍵
GridView1.DataBind();
sqlcon.Close();
}
}
前臺主要程式碼：
... ...
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" CellPadding="4"
ForeColor="#333333" GridLines="None" OnRowDeleting="GridView1_RowDeleting"
OnRowEditing="GridView1_RowEditing"
OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit">
<FooterStyle BackColor="#990000" Font-Bold="True" ForeColor="White" />
<Columns>
<asp:BoundField DataField="身份證號碼" HeaderText="使用者ID" ReadOnly="True" />
<asp:BoundField DataField="姓名" HeaderText="使用者姓名" />
<asp:BoundField DataField="員工性別" HeaderText="性別" />
<asp:BoundField DataField="家庭住址" HeaderText="家庭住址" />
<asp:CommandField HeaderText="選擇" ShowSelectButton="True" />
<asp:CommandField HeaderText="編輯" ShowEditButton="True" />
<asp:CommandField HeaderText="刪除" ShowDeleteButton="True" />
</Columns>
<RowStyle ForeColor="#000066" />
<SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
<PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
<HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
</asp:GridView>