我有一个ASP.NET代码,我用它来插入和查看* .mdb文件中的数据。
当我重新加载浏览器重新加载时,它会插入相同的旧数据。 使用asp:控件插入时避免重复数据
<asp:DetailsView ID="DetailsView1" runat="server" AutoGenerateRows="False"
DataKeyNames="user_id" DataSourceID="AccessDataSource1" Height="50px"
Width="125px" DefaultMode="Insert">
<Fields>
<asp:BoundField DataField="user_id" HeaderText="user_id" InsertVisible="False"
ReadOnly="True" SortExpression="user_id" />
<asp:BoundField DataField="user_name" HeaderText="user_name"
SortExpression="user_name" />
<asp:BoundField DataField="user_pass" HeaderText="user_pass"
SortExpression="user_pass" />
<asp:BoundField DataField="user_email" HeaderText="user_email"
SortExpression="user_email" />
<asp:CommandField ButtonType="Button" ShowInsertButton="True" />
</Fields>
</asp:DetailsView>
<div ID="Div1" runat="server"></div>
<asp:AccessDataSource ID="AccessDataSource1" runat="server"
DataFile="~/App_Data/esn.mdb"
SelectCommand="SELECT * FROM [user]"
InsertCommand="INSERT INTO [user] ([user_name], [user_pass], [user_email]) VALUES (@user_name, @user_pass, @user_email)">
<InsertParameters>
<asp:Parameter Name="user_name" Type="String" />
<asp:Parameter Name="user_pass" Type="String" />
<asp:Parameter Name="user_email" Type="String" />
</InsertParameters>
</asp:AccessDataSource>
<asp:GridView ID="GridView1" runat="server"
AutoGenerateColumns="False" DataKeyNames="user_id"
DataSourceID="AccessDataSource1">
<Columns>
<asp:BoundField DataField="user_id" HeaderText="user_id" InsertVisible="False"
ReadOnly="True" SortExpression="user_id" />
<asp:BoundField DataField="user_name" HeaderText="user_name"
SortExpression="user_name" />
<asp:BoundField DataField="user_pass" HeaderText="user_pass"
SortExpression="user_pass" />
<asp:BoundField DataField="user_email" HeaderText="user_email"
SortExpression="user_email" />
</Columns>
</asp:GridView>
</form>