ASP.NET插入問題

Question

我試圖在PHP經歷了幾年後開始學習ASP.NET，並且無法獲得基礎知識。

我只是試圖插入一行到MS SQL Server Compact 4.0數據庫與ASP.NET & C＃。但是，我的頁面只插入一個空行。編輯&刪除GridView的功能正常工作。我究竟做錯了什麼？

Default.aspx的

<%@ Page Title="Home Page" Language="C#" MasterPageFile="~/Site.master" AutoEventWireup="true" 
CodeBehind="Default.aspx.cs" Inherits="testSite._Default" %> 

<asp:Content ID="HeaderContent" runat="server" ContentPlaceHolderID="HeadContent"> 
</asp:Content> 
<asp:Content ID="BodyContent" runat="server" ContentPlaceHolderID="MainContent"> 
<h2>People</h2> 
<p> 
    <asp:GridView ID="GridView1" runat="server" AllowSorting="True" 
     AutoGenerateColumns="False" DataKeyNames="ID" DataSourceID="SqlDataSource1"> 
     <Columns> 
      <asp:CommandField ShowDeleteButton="True" ShowEditButton="True" 
       ShowSelectButton="True" /> 
      <asp:BoundField DataField="first" HeaderText="first" SortExpression="first" /> 
      <asp:BoundField DataField="last" HeaderText="last" SortExpression="last" /> 
     </Columns> 
    </asp:GridView> 
    <asp:SqlDataSource ID="SqlDataSource1" runat="server" 
     ConnectionString="<%$ ConnectionStrings:sqltestConnectionString %>" 
     DeleteCommand="DELETE FROM [People] WHERE [ID] = @ID" 
     InsertCommand="INSERT INTO [People] ([first], [last]) VALUES (@first, @last)" 
     SelectCommand="SELECT * FROM [People]" 
     UpdateCommand="UPDATE [People] SET [first] = @first, [last] = @last WHERE [ID] = @ID" > 
     <DeleteParameters> 
      <asp:Parameter Name="ID" Type="Int32" /> 
     </DeleteParameters> 
     <InsertParameters> 
      <asp:FormParameter Name="first" FormField="txtFirst" /> 
      <asp:FormParameter Name="last" FormField="txtLast" /> 
     </InsertParameters> 
     <UpdateParameters> 
      <asp:Parameter Name="first" Type="String" /> 
      <asp:Parameter Name="last" Type="String" /> 
      <asp:Parameter Name="ID" Type="Int32" /> 
     </UpdateParameters> 
    </asp:SqlDataSource> 
</p> 
<p> 
    <asp:Label ID="Label1" runat="server" Text="First"></asp:Label> 
    <asp:TextBox ID="txtFirst" runat="server"></asp:TextBox> 
    <br /> 
    <asp:Label ID="Label2" runat="server" Text="Last"></asp:Label> 
    <asp:TextBox ID="txtLast" runat="server"></asp:TextBox> 
    <br /> 
    <asp:Button ID="btnAdd" runat="server" onclick="btnAdd_Click" Text="Add" /> 
</p> 
</asp:Content> 

Default.aspx.cs

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Web; 
using System.Web.UI; 
using System.Web.UI.WebControls; 

namespace testSite 
{ 
    public partial class _Default : System.Web.UI.Page 
    { 
     protected void Page_Load(object sender, EventArgs e) 
     { 

     } 

     protected void btnAdd_Click(object sender, EventArgs e) 
     { 
      SqlDataSource1.Insert(); 
     } 
    } 
} 

Answer 1

試試這個

private List<SqlParameter> insertParameters = new List<SqlParameter>(); 

    protected void Page_Load(object sender, EventArgs e) 
    { 

    } 
    protected void Button1_Click(object sender, EventArgs e) 
    { 
     SqlParameter fName = new SqlParameter("@First", SqlDbType.VarChar, 30); 
     fName.Direction = ParameterDirection.Input; 

     fName.Value = txtFirst.Text; 
     SqlParameter lName = new SqlParameter("@Last", SqlDbType.VarChar, 30); 
     lName.Direction = ParameterDirection.Input; 

     lName.Value = txtLast.Text; 

     insertParameters.Add(fName); 
     insertParameters.Add(lName); 
     SqlDataSource1.Insert(); 
    } 

    protected void SqlDataSource1_Inserting(object sender, SqlDataSourceCommandEventArgs e) 
    { 

     e.Command.Parameters.Clear(); 

     foreach (SqlParameter p in insertParameters) 

      e.Command.Parameters.Add(p); 
    } 
}