Question

嘿伙计们，我有一个绑定到SqlDataSource的GridView，一切正常，只是更新不起作用，我调用存储过程，所有参数及其dataTypes都是正确的，实际上没有任何事件在该更新按钮上工作，我试图改变CommandName为“Change”并创建了OnCommand Event，并在代码中编写了Response Message。但更新按钮上没有任何反应，取消按钮工作正常，还有删除工作，更新只是一个问题，即使程序有一些问题至少应该引发事件，我甚至在Sql Profiler中检查过，但更新程序从不点击Sql Server 2008 ...

但是当我删除SqlDataSource时，一切工作正常，使用相同的存储过程的更新命令。

请帮我解决这个问题，我在这里严重困扰

<asp:GridView ID="GridView1" runat="server" DataSourceID="SqlDataSource1" AutoGenerateColumns="False" 
    CellPadding="4" DataKeyNames="Title" EnableModelValidation="True"
    ForeColor="#333333" GridLines="None"
    ShowFooter="True" Width="950" AllowPaging="true" PageSize="10">
    <AlternatingRowStyle BackColor="White" ForeColor="#284775" />
    <Columns>
        <asp:TemplateField HeaderText="Title">
            <ItemTemplate>
                <%# Eval("Title") %>
            </ItemTemplate>
            <EditItemTemplate>
                <asp:Label ID="txtEditTitle" runat="server" Text='<%# Bind("Title") %>'></asp:Label>
            </EditItemTemplate>
         </asp:TemplateField>
        <asp:TemplateField HeaderText="Quote">
            <ItemTemplate>
                <%# Eval("Quote") %>
            </ItemTemplate>
            <EditItemTemplate>
                <asp:TextBox ID="txtEditQuote" runat="server" Text='<%# Bind("Quote") %>'></asp:TextBox>
            </EditItemTemplate>
        </asp:TemplateField >
        <asp:TemplateField HeaderText="Quote Link">
            <ItemTemplate>
                <%# Eval("QuoteLink") %>
            </ItemTemplate>
            <EditItemTemplate>
                <asp:TextBox ID="txtEditQuoteLink" runat="server" Text='<%# Bind("QuoteLink") %>'></asp:TextBox>
            </EditItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField HeaderText="Published">
            <ItemTemplate>
                <asp:CheckBox ID="chkBox" runat="server" Checked='<%# Convert.ToBoolean(Eval("Published")) %>' Enabled = "false" />  
            </ItemTemplate>
            <EditItemTemplate>
                <asp:CheckBox ID="chkEditBox" runat="server" Checked='<%# Bind("Published") %>' Enabled="true" />
            </EditItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField HeaderText="PublishedDate">
            <ItemTemplate>
                <%# Convert.ToDateTime(DataBinder.Eval(Container.DataItem,"PublishedDate")).ToString("MM.dd.yyyy") %>
            </ItemTemplate>
            <EditItemTemplate>
                <asp:TextBox ID="txtEditPublishedDate" runat="server" Text='<%# Bind("PublishedDate") %>'></asp:TextBox>
            </EditItemTemplate>
        </asp:TemplateField>
       <asp:TemplateField HeaderText="Commands">
            <ItemTemplate>
                <asp:ImageButton runat="server" ID="Edit" ImageUrl="/images/edit.gif" CommandName="Edit" />
                <asp:ImageButton runat="server" ID="Delete" ImageUrl="/images/delete.gif" CommandName="Delete" />
            </ItemTemplate>
            <EditItemTemplate>
                <asp:Button runat="server" ID="btn1" CommandName="Update" Text="Update" />
                <asp:ImageButton runat="server" ID="Cancel" ImageUrl="/images/delete.gif" CommandName="Cancel" />
            </EditItemTemplate>
        </asp:TemplateField>
    </Columns>
    <EditRowStyle BackColor="#999999" />
    <FooterStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
    <HeaderStyle BackColor="#5D7B9D" Font-Bold="True" HorizontalAlign="Left" ForeColor="White" />
    <PagerStyle BackColor="#284775" ForeColor="White" HorizontalAlign="Center" />
    <RowStyle BackColor="#F7F6F3" ForeColor="#333333" />
    <SelectedRowStyle BackColor="#E2DED6" Font-Bold="True" ForeColor="#333333" />
</asp:GridView>
  <asp:SqlDataSource ID="SqlDataSource1" runat="server" 
    ConnectionString="<%$ ConnectionStrings:SiteSqlServer %>" 
    DeleteCommand="DELETE FROM [Quotes] WHERE [Title] = @Title"
    SelectCommand= "SELECT [Title], [Quote], [QuoteLink], [Published], [PublishedDate] FROM [Quotes]" 
    UpdateCommand="sp_UpdateQuotes" UpdateCommandType="StoredProcedure"
    InsertCommand="INSERT INTO [Quotes] ([Title], [Quote], [QuoteLink], [Published], [PublishedDate]) VALUES (@Title, @Quote, @QuoteLink, @Published, @PublishedDate)">
    <DeleteParameters>
        <asp:Parameter Name="Title" Type="String" />
    </DeleteParameters>
    <InsertParameters>
        <asp:Parameter Name="Title" Type="String" />
        <asp:Parameter Name="Quote" Type="String" />
        <asp:Parameter Name="QuoteLink" Type="String" />
        <asp:Parameter Name="Published" Type="Boolean" />
        <asp:Parameter Name="PublishedDate" Type="DateTime" />
    </InsertParameters>
    <UpdateParameters>
        <asp:Parameter Name="Quote" Type="String" DefaultValue = "QUotes are simple" />
        <asp:Parameter Name="QuoteLink" Type="String" DefaultValue = "QUotes are Linked" />
        <asp:Parameter Name="Published" Type="Boolean" DefaultValue = "False" />
        <asp:Parameter Name="PublishedDate" Type="DateTime" DefaultValue = "05/15/2011" />
    </UpdateParameters>
</asp:SqlDataSource>

ALTER PROCEDURE [dbo].[sp_UpdateQuotes] @Title varchar(max), @Quote varchar(max), @QuoteLink varchar(max), @Published bit, @PublishedDate DateTime AS BEGIN UPDATE dbo.Quotes SET Quote = @Quote, QuoteLink = @QuoteLink, Published = @Published, PublishedDate = @PublishedDate



WHERE Title = @Title  

If @Published = 1  
BEGIN  
    UPDATE dbo.Quotes SET Published = 0 WHERE Title <> @Title AND Published = 1  
END

WHERE Title = @Title If @Published = 1 BEGIN UPDATE dbo.Quotes SET Published = 0 WHERE Title <> @Title AND Published = 1 END 希望这能让你清楚地知道什么是让我感到困扰的更新

Answer 1

您尚未传递@Title parameter，这是您存储过程中的主要密钥，并在where Clause中使用。

如果要查看更新参数中没有标题参数：

<UpdateParameters>
    <asp:Parameter Name="Quote" Type="String" />
    <asp:Parameter Name="QuoteLink" Type="String" />
    <asp:Parameter Name="Published" Type="Boolean" />
    <asp:Parameter Name="PublishedDate" Type="DateTime" />
</UpdateParameters>

如果添加标题参数，它将起作用：

    <asp:Parameter Name="Title" Type="String" />

Answer 2

我还遇到了一个没有更新的GridView的问题。在GridView的RowUpdating事件中检查e.Newvalues Dictionary显示记录的旧值被发送到数据库UPDATE查询。 DataKeyNames不是我的问题;我把它设置正确。我的SELECT查询的WHERE子句引用了一个针对我的表单上的TextBox的控件参数。我无意中将此文本框的EnableViewState设置为“False”。因此，GridView在UPDATE发生之前重新绑定。将TextBox上的EnableViewState设置为“True”可以解决问题。

    Protected Sub MyGridView_RowUpdating _
    (sender As Object, e As System.Web.UI.WebControls.GridViewUpdateEventArgs) _
    Handles MyGridView.RowUpdating

    ' Inspect the parameters being sent to the database for an ASP NET GridView UPDATE.

    Dim I As Integer

    I = 0

    For Each MVO As System.Collections.DictionaryEntry In e.OldValues
        If MVO.Value Is DBNull.Value OrElse MVO.Value Is Nothing Then
            Debug.Print(I.ToString + ": " + MVO.Key + " Value:  ")
        Else
            Debug.Print(I.ToString + ": " + MVO.Key + " Value:  " + MVO.Value.ToString)
        End If

        I += 1
    Next MVO

    I = 0
    For Each MVN As System.Collections.DictionaryEntry In e.NewValues
        If MVN.Value Is DBNull.Value OrElse MVN.Value Is Nothing Then
            Debug.Print(I.ToString + ": " + MVN.Key + " Value:  ")
        Else
            Debug.Print(I.ToString + ": " + MVN.Key + " Value:  " + MVN.Value.ToString)
        End If
        I += 1
    Next MVN


End Sub

更新不适用于GridView

2 个答案: