gridview中的列表框 [英] Listbox inside gridview

问题描述

Hai，





我正在使用编辑，删除操作的gridview。在gridview中，几列中的列表框都在< ; edititemtemplate>。如何在listview中使用multiselect选项？然后，如果我更新行意味着列表框中的值没有显示已经选择的值.Plz帮助我。



以下是代码：

< asp：TemplateField HeaderText =ImpactedEntity> 
< ItemTemplate> 
 
< asp：Label ID =LblImpactedEntityrunat =serverText ='<％＃Eval（ImpactedEntity）％>'>< / asp：Label> 
< / ItemTemplate> 
< EditItemTemplate> 
 
 
< asp：ListBox ID =lstImpactedEntityrunat =server>< / asp：ListBox> 
< / EditItemTemplate> 
 
< / asp：TemplateField> 
 
 
 
 
 
 
 
< asp：TemplateField HeaderText =ImpactType> 
< ItemTemplate> 
 
< asp：Label ID =LblImpactTyperunat =serverText ='<％＃Eval（ImpactType）％>'>< / asp：Label> 
< / ItemTemplate> 
< EditItemTemplate> 
 
 
< asp：ListBox ID =lstImpactTyperunat =server> 
< asp：ListItem Text =ImpactType1Value =ImpactType1>< / asp：ListItem> 
< asp：ListItem Text =ImpactType2Value =ImpactType2>< / asp：ListItem> 
< asp：ListItem Text =ImpactType3Value =ImpactType3>< / asp：ListItem> 
< / asp：ListBox> 
< / EditItemTemplate> 
 
< / asp：TemplateField> 
 

解决方案

在.aspx页面：



< pre lang =c＃>< asp：gridview id = GridView1 runat = server autogeneratecolumns = False xmlns：asp = ＃unknown >
< columns>
< asp：templatefield headertext = L1 >
< itemtemplate>
< asp：label id = lbl1 runat = server text = <％＃Bind（ L1 ）％> > < / asp：label > < / itemtemplate >
< / asp：templatefield >
< asp：templatefield headertext = L2 >
<的ItemTemplate>
< asp：label id = lbl2 runat = server text = <％＃Bind（ L2 ）％> > < / asp：label > < / itemtemplate >
< / asp：templatefield >
< asp：templatefield headertext = L3 >
<的ItemTemplate>
< asp：linkbutton id = lbl3 runat = server text = <％＃Bind（ L3 ）％> > < / asp：linkbutton > < / itemtemplate >
< / asp：templatefield >
< asp：templatefield headertext = L3 >
<&的ItemTemplate GT;
< asp：listbox id = lstGrd runat = server selectionmode = 多个 > < / asp：listbox > < / itemtemplate >
< / asp：templatefield >
< / 列 >
< SelectedRowStyle BorderWidth = 2px Font-Bold = True Font-Italic = True />
< / asp：gridview >

和.cs页面：

  protected   void  Page_Load（对象发​​件人，EventArgs e）
 {
 DataTable table1 =  new  DataTable（  DTBLE1）; 
 table1.Columns.Add（  L1）; 
 table1.Columns.Add（  L2）; 
 table1.Columns.Add（  L3）; 
 table1.Rows.Add（  1，  5）; 
 table1.Rows.Add（  3，  5）; 
 table1.Rows.Add（  4，  9）; 
 table1.Rows.Add（  7，  3）; 
 table1.Rows.Add（  6，  6）; 
 
 DataSet Dset =  new  DataSet（  DSET1）; 
 Dset.Tables.Add（table1）; 
 
  if （Dset.Tables [ 0 ]。Rows.Count >   0 ）
 {
  for （ int  i =  0 ; i < ;  Dset.Tables [ 0 ]。Rows.Count; i ++）
 {
 DataRow dr = Dset.Tables [ 0 ]行[i]中。; 
  int  a = Convert.ToInt32（dr [  L1]）; 
  int  b = Convert.ToInt32（dr [  L2]）; 
 
  int  c = a + b; 
 dr [  L3] = c.ToString（）; 
} 
} 
 
 GridView1.DataSource = Dset; 
 GridView1.DataBind（）; 
 
  foreach （GridViewRow grdrw   GridView1.Rows）
 { 
 ListBox lst =（ListBox）grdrw.FindControl（  lstGrd）; 
 
 ListItem lstitm =  new  ListItem（）; 
 lstitm.Text =   Value1; 
 lstitm.Value =   Value1; 
 lst.Items.Add（lstitm）; 
 
 lstitm.Text =   Value2; 
 lstitm.Value =   Value2; 
 lst.Items.Add（lstitm）; 
 
 lstitm.Text =   Value3; 
 lstitm.Value =   Value3; 
 lst.Items.Add（lstitm）; 
} 
 
 
 
} 

祝您好运..

Hai,


I am having a gridview with edit,delete operations.In the gridview few columns having listbox in the <edititemtemplate>.How can i use multiselect option in the listview?Then if i am updating the row means the values in listbox is not showing the already selected values.Plz help me.

Below is the code:

       <asp:TemplateField HeaderText="ImpactedEntity">
<ItemTemplate>

   <asp:Label ID="LblImpactedEntity" runat="server" Text='<%# Eval("ImpactedEntity") %>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>


    <asp:ListBox ID="lstImpactedEntity" runat="server"></asp:ListBox>
</EditItemTemplate>

</asp:TemplateField>







               <asp:TemplateField HeaderText="ImpactType">
<ItemTemplate>

   <asp:Label ID="LblImpactType" runat="server" Text='<%# Eval("ImpactType") %>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>


    <asp:ListBox ID="lstImpactType" runat="server">
    <asp:ListItem Text="ImpactType1" Value="ImpactType1"></asp:ListItem>
          <asp:ListItem Text="ImpactType2" Value="ImpactType2"></asp:ListItem>
                <asp:ListItem Text="ImpactType3" Value="ImpactType3"></asp:ListItem>
    </asp:ListBox>
</EditItemTemplate>

</asp:TemplateField>

解决方案

In .aspx page:

<asp:gridview id="GridView1" runat="server" autogeneratecolumns="False" xmlns:asp="#unknown">
           <columns>
               <asp:templatefield headertext="L1">
                   <itemtemplate>
                       <asp:label id="lbl1" runat="server" text="<%# Bind("L1") %>"></asp:label></itemtemplate>
               </asp:templatefield>
               <asp:templatefield headertext="L2">
                   <itemtemplate>
                       <asp:label id="lbl2" runat="server" text="<%# Bind("L2") %>"></asp:label></itemtemplate>
               </asp:templatefield>
               <asp:templatefield headertext="L3">
                   <itemtemplate>
                       <asp:linkbutton id="lbl3" runat="server" text="<%# Bind("L3") %>"></asp:linkbutton></itemtemplate>
               </asp:templatefield>
                <asp:templatefield headertext="L3">
                   <itemtemplate>
                       <asp:listbox id="lstGrd" runat="server" selectionmode="Multiple"></asp:listbox></itemtemplate>
               </asp:templatefield>
           </columns>
           <SelectedRowStyle BorderWidth="2px" Font-Bold="True" Font-Italic="True" />
       </asp:gridview>

And in .cs page:

protected void Page_Load(object sender, EventArgs e)
    {
        DataTable table1 = new DataTable("DTBLE1");
        table1.Columns.Add("L1");
        table1.Columns.Add("L2");
        table1.Columns.Add("L3");
        table1.Rows.Add("1", "5");
        table1.Rows.Add("3", "5");
        table1.Rows.Add("4", "9");
        table1.Rows.Add("7", "3");
        table1.Rows.Add("6", "6");

        DataSet Dset = new DataSet("DSET1");
        Dset.Tables.Add(table1);

        if (Dset.Tables[0].Rows.Count > 0)
        {
            for (int i = 0; i < Dset.Tables[0].Rows.Count; i++)
            {
                DataRow dr = Dset.Tables[0].Rows[i];
                int a = Convert.ToInt32(dr["L1"]);
                int b = Convert.ToInt32(dr["L2"]);

                int c = a + b;
                dr["L3"] = c.ToString();
            }
        }

        GridView1.DataSource = Dset;
        GridView1.DataBind();

        foreach(GridViewRow grdrw in GridView1.Rows)
        {
            ListBox lst = (ListBox)grdrw.FindControl("lstGrd");

            ListItem lstitm = new ListItem();
            lstitm.Text = "Value1";
            lstitm.Value = "Value1";
            lst.Items.Add(lstitm);

            lstitm.Text = "Value2";
            lstitm.Value = "Value2";
            lst.Items.Add(lstitm);

            lstitm.Text = "Value3";
            lstitm.Value = "Value3";
            lst.Items.Add(lstitm);
        }

      

    }

Best of luck..

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