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带有SqlDataSource的GridView：更新不起作用

[英]GridView with SqlDataSource: Update does not work

 原文  2016-01-08 19:19:50  7   1    c#/ asp.net/ sql-server/ gridview

问题描述

我正在使用GridView的自动生成的编辑功能。 出现编辑按钮，单击它会进入编辑模式，但是进行更改并单击更新不会执行任何操作（据我所知）。 数据库不会更新。 通过测试，似乎OnRowEditing会触发，但OnRowUpdating不会触发。 INSERT，SELECT和DELETE都可以完美地工作。 我已经在SQL数据库上直接测试了UpdateCommand，它可以按预期工作。

为什么这不起作用？ 我一直在寻找答案几天。

这是当前状态下的完整代码： 

<%@ Page Language="C# " AutoEventWireup="true"%>
<%@Import Namespace="System.Data" %>
<%@Import Namespace="System.Data.Common" %>
<%@Import Namespace="System.Data.SqlClient" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<script runat="server">
    private void InsertDomain(Object source, EventArgs e)
    {
        SqlDataSource2.Insert();
    }
    private void OnDomainDeleted(Object source, SqlDataSourceStatusEventArgs e)
    {
        Label1.Text = e.AffectedRows + " row(s) were deleted";
    }
    protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
    {
        int x = 5;
    }
    protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
    {
        bool x = e.Cancel;
    }
    protected void GridView1_RowUpdated(object sender, GridViewUpdatedEventArgs e)
    {
        int x = e.AffectedRows;
    }
</script>

<!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>Domain Manager</title>
    <link href='https://fonts.googleapis.com/css?family=Open+Sans' rel='stylesheet' type='text/css' />
    <link href="~/Content/Site.css" rel="stylesheet" type="text/css" />
</head>
<body>
    <asp:Label
        id="Label1"
        runat="server"
        forecolor="Red" />

    <h1>Godaddy</h1>
    <form id="form1" runat="server">

        <asp:SqlDataSource
            id="SqlDataSource1"
            runat="server"
            ConnectionString="<%$ ConnectionStrings:SQLconnect %>"
            SelectCommand="SELECT DomainName,InUse FROM DomainList"
            UpdateCommandType="Text"
            UpdateCommand="UPDATE DomainList SET InUse=@InUse WHERE (DomainName=@DomainName)"
            DeleteCommand="DELETE FROM DomainList WHERE DomainName=@DomainName"
            OnDeleted="OnDomainDeleted">
            <UpdateParameters>
                <asp:Parameter Name="DomainName" Type="String" />
                <asp:Parameter Name="InUse" Type="String" />
            </UpdateParameters>
        </asp:SqlDataSource>

        <asp:GridView
            id="GridView1"
            runat="server"
            AutoGenerateColumns="false"
            DataKeyNames="DomainName"
            AutoGenerateEditButton="true"
            AutoGenerateDeleteButton="true"
            EnableViewState="true"
            ViewStateMode="Enabled"
            DataSourceID="SqlDataSource1"
            AllowSorting="true"
            OnRowEditing="GridView1_RowEditing"
            OnRowUpdating="GridView1_RowUpdating"
            OnRowUpdated="GridView1_RowUpdated">
            <rowstyle backcolor="LightCyan"  
                   forecolor="Black" />
            <alternatingrowstyle backcolor="PaleTurquoise"  
                  forecolor="Black" />
            <columns>
                <asp:BoundField HeaderText="Domain Name" DataField="DomainName" ReadOnly="true" SortExpression="DomainName" />
                <asp:BoundField HeaderText="In Use" DataField="InUse" SortExpression="InUse" />
                <%--<asp:BoundField HeaderText="Domain Cost" DataField="DomainCost" />
                <asp:BoundField HeaderText="TLD" DataField="TLD" />
                <asp:BoundField HeaderText="Registrar" DataField="Registrar" />
                <asp:BoundField HeaderText="Expiration Date" DataField="ExpirationDate" />
                <asp:BoundField HeaderText="Status" DataField="Status" />
                <asp:BoundField HeaderText="Privacy" DataField="Privacy" />
                <asp:BoundField HeaderText="Forwarding URL" DataField="ForwardingURL" />
                <asp:BoundField HeaderText="Notes" DataField="Notes" />
                <asp:BoundField HeaderText="Department/Program" DataField="DepartmentProgram" />
                <asp:BoundField HeaderText="Program Contact" DataField="ProgramContact" />--%>
            </columns>
        </asp:GridView>

        <hr />

        <asp:SqlDataSource
            id="SqlDataSource2"
            runat="server"
            ConnectionString="<%$ ConnectionStrings:SQLconnect %>"
            SelectCommand="SELECT * FROM DomainList"
            InsertCommand="INSERT INTO DomainList (DomainName,InUse,DomainCost,TLD,Registrar,ExpirationDate,Status, 
                                    Privacy,ForwardingURL,Notes,DepartmentProgram,ProgramContact) VALUES (@DName,@IUse,@DCost,
                                    @TLD,@Registrar,@ExDate,@Status,@Privacy,@FURL,@Notes,@Dept,@PContact)" >
                <insertparameters>
                    <asp:FormParameter Name="DName" FormField="DomainNameBox" />
                    <asp:FormParameter Name="IUse" FormField="InUseBox" />
                    <asp:FormParameter Name="DCost" FormField="DomainCostBox" />
                    <asp:FormParameter Name="TLD" FormField="TLDBox" />
                    <asp:FormParameter Name="Registrar" FormField="RegistrarBox" />
                    <asp:FormParameter Name="ExDate" FormField="ExDateBox" />
                    <asp:FormParameter Name="Status" FormField="StatusBox" />
                    <asp:FormParameter Name="Privacy" FormField="PrivacyBox" />
                    <asp:FormParameter Name="FURL" FormField="FURLBox" />
                    <asp:FormParameter Name="Notes" FormField="NotesBox" />
                    <asp:FormParameter Name="Dept" FormField="DeptBox" />
                    <asp:FormParameter Name="PContact" FormField="PContactBox" />
                </insertparameters>
        </asp:SqlDataSource>

        <h1>Create New Godaddy Domain: </h1>

        <br />Domain Name: <asp:TextBox
            id="DomainNameBox"
            runat="server" />

        <asp:RequiredFieldValidator
            id="RequiredFieldValidator1"
            runat="server"
            ControlToValidate="DomainNameBox"
            Display="Static"
            ErrorMessage="You must enter a domain name" />

        <br />In Use? (yes/no): <asp:TextBox
            id="InUseBox"
            runat="server" />

        <br />Cost: <asp:TextBox
            id="DomainCostBox"
            runat="server" />

        <br />TLD: <asp:TextBox
            id="TLDBox"
            runat="server" />

        <br />Registrar: <asp:TextBox
            id="RegistrarBox"
            runat="server" />

        <br />Expiration Date: <asp:TextBox
            id="ExDateBox"
            runat="server" />

        <br />Status: <asp:TextBox
            id="StatusBox"
            runat="server" />

        <br />Privacy: <asp:TextBox
            id="PrivacyBox"
            runat="server" />

        <br />Forwarding URL: <asp:TextBox
            id="FURLBox"
            runat="server" />

        <br />Notes: <asp:TextBox
            id="NotesBox"
            runat="server" />

        <br />Department: <asp:TextBox
            id="DeptBox"
            runat="server" />

        <br />Program Contact: <asp:TextBox
            id="PContactBox"
            runat="server" />

        <br /><asp:Button
            id="Button1"
            runat="server"
            text="Create New Domain"
            onclick="InsertDomain" />

        <hr />

        <h1>Network Solutions</h1>

        <asp:GridView
            id="GridView2"
            runat="server"
            AutoGenerateColumns="false"
            AutoGenerateEditButton="true"
            DataKeyNames="DomainName"
            DataSourceID="SqlDataSource3">
            <rowstyle backcolor="LightCyan"  
                   forecolor="Black"
                   />
                <alternatingrowstyle backcolor="PaleTurquoise"  
                  forecolor="Black"
                  />
            <columns>
                <asp:BoundField HeaderText="Domain Name" DataField="DomainName" ReadOnly="true" />
                <asp:BoundField HeaderText="Account" DataField="AccountNo" />
                <asp:BoundField HeaderText="Points To" DataField="PointsTo" />
                <asp:BoundField HeaderText="Folder" DataField="Folder" />
                <asp:BoundField HeaderText="Auto Renew" DataField="AutoRenew" />
                <asp:BoundField HeaderText="Expiration Date" DataField="ExpirationDate" />
                <asp:BoundField HeaderText="WHOIS Admin" DataField="AdminContact" />
                <asp:BoundField HeaderText="WHOIS Tech" DataField="TechContact" />
                <asp:BoundField HeaderText="Account Holder" DataField="AccountHolder" />
                <asp:BoundField HeaderText="Private" DataField="Private" />
            </columns>
        </asp:GridView>

        <asp:SqlDataSource 
            id="SqlDataSource3"
            runat="server"
            DataSourceMode="DataReader"
            ConnectionString="<%$ ConnectionStrings:SQLconnect%>"
            SelectCommand="SELECT DomainName,AccountNo,PointsTo,Private,Folder,AutoRenew,ExpirationDate, 
                                AdminContact,TechContact,AccountHolder FROM NetworkSolutions"
            UpdateCommand="UPDATE NetworkSolutions SET AccountNo=@AccountNo,PointsTo=@PointsTo,Private=@Private,Folder=@Folder,AutoRenew=@AutoRenew,ExpirationDate=@ExpirationDate,
                            AdminContact=@AdminContact,TechContact=@TechContact,AccountHolder=@AccountHolder WHERE (DomainName=@DomainName)">
        </asp:SqlDataSource>

    </form>
</body>
</html>

解决方案：我有一个函数InsertDomain ，似乎正在从GridViews捕获更新。 解决方案要求设置ValidationGroup来限制该验证影响整个页面。

1 个解决方案

解决方案1
 0 已采纳  2016-01-08 19:43:53

确保SqlDataSource中InUse参数的数据类型与数据库中同一列的数据类型匹配。

如果此列是数据库中的字符串类型（如varchar或nvarchar），则将进行更新，因为您已在SqlDataSource中将数据类型指定为string 。 否则将是一个问题。

发布完整页面代码后，我注意到验证器没有提及ValidationGroup ，因此，当文本框中没有任何输入时，gridview中的Update按钮不会重新发布。 通过以下代码替换验证器和按钮标记，然后它应该可以工作。 

      <asp:RequiredFieldValidator
            id="RequiredFieldValidator1"
            runat="server"
            ControlToValidate="DomainNameBox"
            Display="Static"
            ErrorMessage="You must enter a domain name"  ValidationGroup="Insert"  />
<asp:Button
            id="Button1"
            runat="server"
            text="Create New Domain"
            onclick="InsertDomain" ValidationGroup="Insert" />

另外，如果看到错误消息“ WebForms UnobtrusiveValidationMode需要ScriptResourceMapping ..”，则在Web配置文件中包含以下appsetting。 

<add key="ValidationSettings:UnobtrusiveValidationMode" value="None" />

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