我的asp页面上有一个GridView。我想通过单击按钮来更改LinqDataSource。这是因为我有2个数据库视图,您必须能够根据需要查看其中一个视图。当我尝试将GridView绑定到我的任何LinqDataSource时,我的问题没有发生。
我的C#代码:
protected void Page_Load(object sender, EventArgs e)
{
this.Grid.DataSource = lqds_Grid1;
this.Grid.DataBind();
}
protected void Button1_Click(object sender, EventArgs e)
{
if (this.Grid.DataSource == lqds_Grid1)
{
this.Grid.DataSource = lqds_Grid2;
this.Grid.DataBind();
}
else
{
this.Grid.DataSource = lqds_Grid1;
this.Grid.DataBind();
}
}
我的asp代码:
<%@ Page Title="Home Page" Language="C#" MasterPageFile="~/Site.master" AutoEventWireup="true"
CodeBehind="Default.aspx.cs" Inherits="AddressReporting._Default" %>
<asp:Content ID="HeaderContent" runat="server" ContentPlaceHolderID="HeadContent">
</asp:Content>
<asp:Content ID="BodyContent" runat="server" ContentPlaceHolderID="MainContent">
<asp:LinqDataSource ID="lqds_Grid1" runat="server"
ContextTypeName="AddressReporting.MobileGateway" EntityTypeName=""
OrderBy="AdrID, Country" TableName="BarcodeWithLocation">
</asp:LinqDataSource>
<asp:LinqDataSource ID="lqds_Grid2" runat="server"
ContextTypeName="AddressReporting.MobileGateway" EntityTypeName=""
OrderBy="AdrID, Country" TableName="BarcodeWithLocationSorted">
</asp:LinqDataSource>
<asp:GridView ID="Grid" runat="server" AllowPaging="True"
AutoGenerateColumns="False" Height="217px" Width="268px">
</asp:GridView>
<asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="Button" />
</asp:Content>
答案 0 :(得分:1)
这是因为page_load
方法(事件)工作时间页面加载所以它不是那么正确
protected void Page_Load(object sender, EventArgs e)
{
if(!isPostBack) {
this.Grid.DataSource = lqds_Grid1;
this.Grid.DataBind();
}
}
你应该检查页面是否有回发
答案 1 :(得分:0)
首先,您可以尝试将数据源设置为null,然后再为其赋予新值,并在分配新值后,您可以调用datagrid的refresh方法以强制它重绘自己
this.Grid.DataSource = null;
this.Grid.DataSource = lqds_Grid1;
this.Grid.DataBind();
this.Grid.DataSource.Refresh();