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[英]SQL Delete Statement does not work with selecting a row from a dataGridView
[英]SQL Delete from DataGridView is not happening
我有一個啟用了刪除功能的DataGridView,但從未發生。 整個網格消失(多行),但是我單擊的行的刪除從未發生。
我可以在sql Management Studio中手動運行sql語句,它的效果很好,但似乎從未從網頁上運行過。
我不知道從這里去哪里,我以前從GridView還沒有遇到過這樣的問題。
SqlDataSource:
<asp:SqlDataSource ID="SqlDataSourceVisitors" runat="server" ConnectionString="constring" DeleteCommand="DELETE FROM [RegisteredVisitors] WHERE [PK] = @PK UPDATE [dbo].[Users] SET [NumberOfVisitors] = (SELECT [NumberOfVisitors] FROM [dbo].[NumberOfVisitors] WHERE [ResidentName] = @ResidentName) -1 WHERE [ResidentName] = @ResidentName" InsertCommand="INSERT INTO [RegisteredVisitors] ([ResidentName], [ResidentAddress], [VisitorCode], [VisitorName]) VALUES (@ResidentName, @ResidentAddress, @VisitorCode, @VisitorName)" SelectCommand="SELECT * FROM [RegisteredVisitors] WHERE ([ResidentName] = @ResidentName)" UpdateCommand="UPDATE [RegisteredVisitors] SET [ResidentName] = @ResidentName, [ResidentAddress] = @ResidentAddress, [VisitorCode] = @VisitorCode, [VisitorName] = @VisitorName WHERE [PK] = @PK" ProviderName="System.Data.SqlClient">
<DeleteParameters>
<asp:Parameter Name="PK" Type="Int32" />
<asp:Parameter Name="ResidentName" Type="String" />
</DeleteParameters>
<InsertParameters>
<asp:Parameter Name="ResidentName" Type="String" />
<asp:Parameter Name="ResidentAddress" Type="String" />
<asp:Parameter Name="VisitorCode" Type="Int32" />
<asp:Parameter Name="VisitorName" Type="String" />
</InsertParameters>
<SelectParameters>
<asp:ControlParameter ControlID="txtboxSelectedResident" Name="ResidentName" PropertyName="Text" Type="String" />
</SelectParameters>
<UpdateParameters>
<asp:Parameter Name="ResidentName" Type="String" />
<asp:Parameter Name="ResidentAddress" Type="String" />
<asp:Parameter Name="VisitorCode" Type="Int32" />
<asp:Parameter Name="VisitorName" Type="String" />
<asp:Parameter Name="PK" Type="Int32" />
</UpdateParameters>
</asp:SqlDataSource>
網格視圖:
<asp:GridView ID="DataGridViewVisitors" runat="server" CellPadding="4" DataSourceID="SqlDataSourceVisitors" ForeColor="#333333" GridLines="None">
<AlternatingRowStyle BackColor="White" ForeColor="#284775" />
<Columns>
<asp:CommandField ShowDeleteButton="True" />
</Columns>
<EditRowStyle BackColor="#999999" />
<FooterStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
<HeaderStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
<PagerStyle BackColor="#284775" ForeColor="White" HorizontalAlign="Center" />
<RowStyle BackColor="#F7F6F3" ForeColor="#333333" />
<SelectedRowStyle BackColor="#E2DED6" Font-Bold="True" ForeColor="#333333" />
<SortedAscendingCellStyle BackColor="#E9E7E2" />
<SortedAscendingHeaderStyle BackColor="#506C8C" />
<SortedDescendingCellStyle BackColor="#FFFDF8" />
<SortedDescendingHeaderStyle BackColor="#6F8DAE" />
</asp:GridView>
如果我是正確的,那你就是想念; 在DeleteCommand中。 寫入命令內部的所有內容都將立即執行。 因此,要分離出刪除和更新查詢,您需要;。
DeleteCommand="DELETE FROM [RegisteredVisitors] WHERE [PK] = @PK; UPDATE [dbo].[Users] SET [NumberOfVisitors] = (SELECT [NumberOfVisitors] FROM [dbo].[NumberOfVisitors] WHERE [ResidentName] = @ResidentName) -1 WHERE [ResidentName] = @ResidentName"
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