怎么获取gridview中定义的dropdownlist
日期：2014-05-18 浏览次数：20401 次
如何获取gridview中定义的dropdownlist.
我现在拖了一个控件gridview,在里边有自定义的几个控件,例如:textbox,dropdownlist等,现在点击某个按钮的时候,能够取出第一行dropdownlist的选择的内容,我的代码一直有错误,一直提示"未将对象引用到实例".
前台代码为:
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="WebApplication5.WebForm1" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Panel ID="Panel1" runat="server">
<asp:Label ID="lblTableEnglishName" runat="server" Text="表格英文名称:" Font-Size="Medium"></asp:Label>
<asp:TextBox ID="txtTableEnglishExplain" runat="server" AutoPostBack="True" Width="150px"></asp:TextBox>
<asp:Label ID="lblTableChineseName" runat="server" Text="表格中文名称:"></asp:Label>
<asp:TextBox ID="txtTableChineseExplain" runat="server"></asp:TextBox>
</asp:Panel>
</div>
<asp:GridView ID="gdvTableField" runat="server" AutoGenerateColumns="false"
OnRowDataBound="gdvTableField_RowCommand">
<Columns>
<asp:TemplateField HeaderText="中文名称">
<ItemTemplate>
<asp:TextBox ID="txtColumnChineseName" runat="server" AutoPostBack="true"
OnTextChanged="txtColumnChineseName_TextChanged">
</asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="英文名称">
<ItemTemplate>
<asp:TextBox ID="txtColumnEnglishName" runat="server" AutoPostBack="true" OnTextChanged="txtColumnEnglishName_TextChanged">
</asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="字段类型">
<ItemTemplate>
<asp:DropDownList ID="ddlFieldType" runat="server" AutoPostBack="true" OnSelectedIndexChanged="ddlFieldType_SelectedIndexChanged">
<asp:ListItem>字符串类型</asp:ListItem>
<asp:ListItem>数字类型</asp:ListItem>
<asp:ListItem>时间类型</asp:ListItem>
<asp:ListItem>文本类型</asp:ListItem>
<asp:ListItem>小数类型</asp:ListItem>
</asp:DropDownList>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="长度">
<ItemTemplate>
<asp:TextBox ID="txtIntegerCount" runat="server" AutoPostBack="true" OnTextChanged="txtIntegerCount_TextChanged">
</asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="小数位">
<ItemTemplate>
我现在拖了一个控件gridview,在里边有自定义的几个控件,例如:textbox,dropdownlist等,现在点击某个按钮的时候,能够取出第一行dropdownlist的选择的内容,我的代码一直有错误,一直提示"未将对象引用到实例".
前台代码为:
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="WebApplication5.WebForm1" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Panel ID="Panel1" runat="server">
<asp:Label ID="lblTableEnglishName" runat="server" Text="表格英文名称:" Font-Size="Medium"></asp:Label>
<asp:TextBox ID="txtTableEnglishExplain" runat="server" AutoPostBack="True" Width="150px"></asp:TextBox>
<asp:Label ID="lblTableChineseName" runat="server" Text="表格中文名称:"></asp:Label>
<asp:TextBox ID="txtTableChineseExplain" runat="server"></asp:TextBox>
</asp:Panel>
</div>
<asp:GridView ID="gdvTableField" runat="server" AutoGenerateColumns="false"
OnRowDataBound="gdvTableField_RowCommand">
<Columns>
<asp:TemplateField HeaderText="中文名称">
<ItemTemplate>
<asp:TextBox ID="txtColumnChineseName" runat="server" AutoPostBack="true"
OnTextChanged="txtColumnChineseName_TextChanged">
</asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="英文名称">
<ItemTemplate>
<asp:TextBox ID="txtColumnEnglishName" runat="server" AutoPostBack="true" OnTextChanged="txtColumnEnglishName_TextChanged">
</asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="字段类型">
<ItemTemplate>
<asp:DropDownList ID="ddlFieldType" runat="server" AutoPostBack="true" OnSelectedIndexChanged="ddlFieldType_SelectedIndexChanged">
<asp:ListItem>字符串类型</asp:ListItem>
<asp:ListItem>数字类型</asp:ListItem>
<asp:ListItem>时间类型</asp:ListItem>
<asp:ListItem>文本类型</asp:ListItem>
<asp:ListItem>小数类型</asp:ListItem>
</asp:DropDownList>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="长度">
<ItemTemplate>
<asp:TextBox ID="txtIntegerCount" runat="server" AutoPostBack="true" OnTextChanged="txtIntegerCount_TextChanged">
</asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="小数位">
<ItemTemplate>
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