加载时如何在gridview中绑定下拉值 [英] how to bind dropdown values in gridview while loading

问题描述

我正在使用gridview，在内部我正在使用下拉菜单.

当我单击gridview中的Edit链接时，那么我想显示具有现有存储值的下拉列表.

但是，我在下拉列表中获取存储的值.它始终显示选择".

有什么问题..

ASPX代码
----------

I am using gridview and inside i am using dropdown.

When i click the Edit link in gridview, then i want to display the dropdown with existing stored values.

But, i am getting stored values in the dropdown. it is always displaying "select".

what is the problem..

ASPX Code
----------

<asp:TemplateField HeaderText="Remarks Category" HeaderStyle-HorizontalAlign="Center">
                    <EditItemTemplate>
                       <asp:DropDownList ID="drpstatus" runat="server" Style="width: 100px;">
                             <asp:ListItem Text="Select" Value=""></asp:ListItem>
                              <asp:ListItem >Efficiency</asp:ListItem>
                              <asp:ListItem>Estimation</asp:ListItem>
                              <asp:ListItem>Internal Changes</asp:ListItem>
                              <asp:ListItem>External Changes</asp:ListItem>
                       </asp:DropDownList>
                    </EditItemTemplate>
                    <ItemTemplate>
                           <asp:Label ID="lblstatus" runat="server" Text=<%#Eval("EmpName")%></asp:Label>
                    </ItemTemplate>
                     <HeaderStyle HorizontalAlign="Center" />
               </asp:TemplateField>

ASPX.Vb代码
--------------

ASPX.Vb Code
--------------

If e.Row.RowType = DataControlRowType.DataRow Then
          Dim drpstatus As DropDownList = DirectCast(e.Row.FindControl("drpstatus"), DropDownList)
          If drpstatus IsNot Nothing Then
              drpstatus.SelectedIndex = drpstatus.Items.IndexOf(drpstatus.Items.FindByValue(DataBinder.Eval(e.Row.DataItem, EmpName
          End If
      End If

推荐答案

尝试此操作，首先获取一个模板字段，然后添加项目模板，然后在编辑模板内部将下拉列表如下...

try this ,first take a template field then add item template,then inside edit template put the dropdown as follow...

<asp:templatefield headertext="Status" sortexpression="with_status" xmlns:asp="#unknown">
                    <itemtemplate>
                        <asp:label id="Label1" runat="server" text="<%# Bind("with_status") %>"></asp:label>
                    </itemtemplate>

                    <edititemtemplate>
                        <asp:dropdownlist id="DropDownList1" runat="server">
                        <asp:listitem value="0">-Select- </asp:listitem>
                        <asp:listitem value="1">pending </asp:listitem>
                      <asp:listitem value="2">completed </asp:listitem>
                                            
                        </asp:dropdownlist>
                    </edititemtemplate>
                </asp:templatefield>

aspx.cs

在rowupdating上输入以下代码

aspx.cs

on rowupdating put the following code

DropDownList ddl2 = (DropDownList)GridView1.Rows[e.RowIndex].FindControl("DropDownList1");
            if (ddl2.SelectedValue.ToString() != "0")
            {
                SqlDataSource1.UpdateParameters["with_status"].DefaultValue = ddl2.SelectedItem.ToString();

            }

这篇关于加载时如何在gridview中绑定下拉值的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！