嘗試更新客戶詳細信息時,出現以下錯誤消息。我正在使用detailsview。對於一個或多個所需參數沒有給出值。當更新條目
異常詳細信息:System.Data.OleDb.OleDbException:對於一個或多個所需參數,未給定值 。
我在這裏發現,這通常與一個值爲空或零長度的字符串有關。到目前爲止這麼好,但我該如何解決它?
插入和刪除工作正常。甚至更新曾經工作,但事情必須改變,我只是無法弄清楚什麼。
UpdateCommand="UPDATE [Customers] SET [CompanyName] = ?, [ContactName] = ?, [ContactTitle] = ?, [Address] = ?, [City] = ?, [Region] = ?, [PostalCode] = ?, [Country] = ?, [Phone] = ?, [Fax] = ? WHERE (([CustomerID] = ?) OR ([CustomerID] IS NULL AND ? IS NULL))">
<UpdateParameters>
<asp:Parameter Name="CompanyName" Type="String" />
<asp:Parameter Name="ContactName" Type="String" />
<asp:Parameter Name="ContactTitle" Type="String" />
<asp:Parameter Name="Address" Type="String" />
<asp:Parameter Name="City" Type="String" />
<asp:Parameter Name="Region" Type="String" />
<asp:Parameter Name="PostalCode" Type="String" />
<asp:Parameter Name="Country" Type="String" />
<asp:Parameter Name="Phone" Type="String" />
<asp:Parameter Name="Fax" Type="String" />
<asp:Parameter Name="CustomerID" Type="String" />
</UpdateParameters>
<FieldHeaderStyle CssClass="fieldheader"></FieldHeaderStyle>
<Fields>
<asp:BoundField DataField="CustomerID" HeaderText="CustomerID" ReadOnly="False"
SortExpression="CustomerID" />
<asp:BoundField DataField="CompanyName" HeaderText="CompanyName"
SortExpression="CompanyName" />
<asp:BoundField DataField="ContactName" HeaderText="ContactName"
SortExpression="ContactName" />
<asp:BoundField DataField="ContactTitle" HeaderText="ContactTitle"
SortExpression="ContactTitle" />
<asp:BoundField DataField="Address" HeaderText="Address"
SortExpression="Address" />
<asp:BoundField DataField="City" HeaderText="City" SortExpression="City" />
<asp:BoundField DataField="Region" HeaderText="Region"
SortExpression="Region" />
<asp:BoundField DataField="PostalCode" HeaderText="PostalCode"
SortExpression="PostalCode" />
<asp:BoundField DataField="Country" HeaderText="Country"
SortExpression="Country" />
<asp:BoundField DataField="Phone" HeaderText="Phone" SortExpression="Phone" />
<asp:BoundField DataField="Fax" HeaderText="Fax" SortExpression="Fax" />
<asp:CommandField ShowDeleteButton="True" ShowEditButton="True" />
</Fields>
這是SQL Server或訪問?請注意,SQL Server使用命名參數,Access使用索引參數。 – Dai 2013-04-25 22:55:03