通过选择GridView1字段打开GridView2

Question

我试图尽我选择内GridView1的特定字段时，它在GridView2 Access数据库打开相关数据。

这是我页面上的代码。

<%@ Page Title="" Language="vb" AutoEventWireup="false" MasterPageFile="~/Site1.Master" CodeBehind="MainView.aspx.vb" Inherits="DosimetryASPNET_WebApplication.MainView" %>


<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" runat="server">
</asp:Content>

<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder2" runat="server">
</asp:Content>


<asp:Content ID="Content3" ContentPlaceHolderID="ContentPlaceHolder3" runat="server">
    <asp:Button ID="btnMenuView" runat="server" Text="Return to Menu" Width="200px" OnClick="btnMenuView_Click" />
    <br />
    <br />

</asp:Content>

<asp:Content ID="Content4" ContentPlaceHolderID="ContentPlaceHolder4" runat="server">
    <br />
    <br />

    <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="BatchID">
        <Columns>
            <asp:BoundField DataField="BatchID" HeaderText="BatchID" InsertVisible="False" ReadOnly="True" SortExpression="BatchID" />
            <asp:BoundField DataField="Product" HeaderText="Product" SortExpression="Product" />
            <asp:BoundField DataField="BatchSize" HeaderText="BatchSize" SortExpression="BatchSize" />
            <asp:BoundField DataField="Priority" HeaderText="Priority" SortExpression="Priority" />
            <asp:BoundField DataField="StartReq" HeaderText="StartReq" SortExpression="StartReq" />
            <asp:BoundField DataField="Status" HeaderText="Status" SortExpression="Status" />
        </Columns>
    </asp:GridView>

    <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:NorthwindConnectionString1 %>" ProviderName="<%$ ConnectionStrings:NorthwindConnectionString1.ProviderName %>" SelectCommand="SELECT * FROM [AllBatches]"></asp:SqlDataSource>

    <asp:GridView ID="GridView2" runat="server" AutoGenerateColumns="False" DataKeyNames="BatchID" Visible="False">
    </asp:GridView>

</asp:Content>  

这是我用来填充GridView1的代码

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        Dim dt As New Northwind.AllBatchesDataTable
        Using da As New NorthwindTableAdapters.AllBatchesTableAdapter
            da.Fill(dt)
        End Using
            GridView1.DataSource = dt.DefaultView
            GridView1.DataBind()
End Sub  

我正在使用Access数据库，并且为了填充GridView2，我使用了第二个表。

对于GridView1我用下面列“AllBatches”表：BatchID - 产品 - BATCHSIZE - 优先级 - StartReq - 状态

对于GridView2，我希望调用表“ IngredientsTable ”。 它包含以下列： LotManufactID- 成分 - 实际 - 目标 - 最小 - 最大 -WeighinhDate- 状态 -IDBatchID

在Access数据库中，该表的工作方式就像我希望它在ASP.NET中一样。 当我单击“ AllBatches ”的“ BatchID ”时，它将在我单击的带有“ IngredientsTable ”数据的行下方的行中打开一个辅助表。 我在两个表之间的银行中创建了一个关系。

这样做可能太复杂了，但是我需要开发此功能，该功能至少需要在GridView2中打开与“ AllBatches ”的“ BatchID ”相关的“ IngredientsTable ”数据。

希望您成功地表达了我的怀疑和明确的态度。 我正在等待帮助。

Answer 1

许多可能的解决方案之一：-在GridView1中声明“选择”字段-定义GridView2列-当单击选择字段时，会引发onSelectedIndexChanged，并且在这种情况下，您将读取所单击行的BatchID，对成分表执行查询并在GridView2上显示结果

 <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="BatchID" OnSelectedIndexChanged="GridView1_SelectedIndexChanged">
    <Columns>
        <asp:CommandField ShowSelectButton="True" />
        <asp:BoundField DataField="BatchID" HeaderText="BatchID" InsertVisible="False" ReadOnly="True" SortExpression="BatchID"  />
        <asp:BoundField DataField="Product" HeaderText="Product" SortExpression="Product" />
        <asp:BoundField DataField="BatchSize" HeaderText="BatchSize" SortExpression="BatchSize" />
        <asp:BoundField DataField="Priority" HeaderText="Priority" SortExpression="Priority" />
        <asp:BoundField DataField="StartReq" HeaderText="StartReq" SortExpression="StartReq" />
        <asp:BoundField DataField="Status" HeaderText="Status" SortExpression="Status" />
    </Columns>
</asp:GridView>

<asp:GridView ID="GridView2" runat="server" AutoGenerateColumns="False" DataKeyNames="BatchID" Visible="False">
    <Columns>
        <asp:BoundField DataField="LotManufactID " HeaderText="LotManufactID" SortExpression="LotManufactID" />
        <asp:BoundField DataField="Ingredient " HeaderText="Ingredient" SortExpression="Ingredient" />
        <asp:BoundField DataField="Actual " HeaderText="Actual" SortExpression="Actual" />
        <asp:BoundField DataField="Target " HeaderText="Target" SortExpression="Target" />
        <asp:BoundField DataField="Minimum " HeaderText="Minimum" SortExpression="Minimum" />
        <asp:BoundField DataField="Maximum " HeaderText="Maximum" SortExpression="Maximum" />
        <asp:BoundField DataField="WeighinhDate  " HeaderText="WeighinhDate" SortExpression="WeighinhDate" />
        <asp:BoundField DataField="Status  " HeaderText="Status" SortExpression="Status" />
        <asp:BoundField DataField="IDBatchID " HeaderText="IDBatchID" SortExpression="IDBatchID" />
    </Columns>
</asp:GridView>

和代码

protected void GridView1_SelectedIndexChanged(object sender, EventArgs e)
{
    int BatchID = (int)GridView1.DataKeys[GridView1.SelectedIndex].Value;
    //Access Ingredients with batchID
    var dtIngredients = new DataTable(); // create datasource with a query
    GridView2.Visible = true;
    GridView2.DataSource = dtIngredients;
    GridView2.DataBind();
}