detailsview 在编辑的时候使用dropdownlist

public partial class _Default:System.Web.UI.Page
{
protectedvoidPage_Load(objectsender,EventArgse)
{
if(!this.IsPostBack)
{
bindData();
}
}
publicvoidbindData()
{
stringstrSql=ConfigurationManager.AppSettings["strcon"].ToString();
SqlConnectioncon=newSqlConnection(strSql);
SqlCommandcmd=newSqlCommand("select*fromtestwhereid=2",con);
con.Open();
SqlDataReaderread=cmd.ExecuteReader();
DetailsView1.DataSource=read;
DetailsView1.DataBind();
DropDownListdrpsex=DetailsView1.FindControl("drpsex")asDropDownList;
Labellblsex=DetailsView1.FindControl("lblsex")asLabel;
//SqlDataReaderreader=bindToDrop();
//drpsex.DataSource=reader;
//drpsex.DataBind();
//drpsex.SelectedIndex=drpsex.Items.IndexOf(drpsex.Items.FindByText(lblsex.Text.Trim()));//lblsex.Text.Trim();

}
protectedvoidDetailsView1_ItemCommand(objectsender,DetailsViewCommandEventArgse)
{
//if(e.CommandName.Equals("Edit"))//实现一
//{
//DetailsView1.ChangeMode(DetailsViewMode.Edit);

//}

//bindData();
}
protectedvoidDetailsView1_ModeChanging(objectsender,DetailsViewModeEventArgse)
{
//DetailsView1.ChangeMode(DetailsViewMode.Edit);
//bindData();
//实现二
if(DetailsView1.CurrentMode==DetailsViewMode.ReadOnly)
{
DetailsView1.ChangeMode(DetailsViewMode.Edit);
}
elseif(DetailsView1.CurrentMode==DetailsViewMode.Edit)
{
DetailsView1.ChangeMode(DetailsViewMode.ReadOnly);
}
bindData();

}

publicSqlDataReaderbindToDrop()
{
stringstrSql=ConfigurationManager.AppSettings["strcon"].ToString();
SqlConnectioncon=newSqlConnection(strSql);
SqlCommandcmd=newSqlCommand("selectdistinctsexfromtest",con);
con.Open();
SqlDataReaderread=cmd.ExecuteReader();
returnread;
}

protectedvoidDetailsView1_ModeChanged(objectsender,EventArgse)
{

}
protectedvoidDetailsView1_DataBound(objectsender,EventArgse)
{

}
protectedvoidDetailsView1_PreRender(objectsender,EventArgse)
{
//实现dropdownlist在编辑的时候显示一样的值
if(this.IsPostBack)
{
if(DetailsView1.CurrentMode==DetailsViewMode.Edit)
{
DropDownListdrpsex=DetailsView1.FindControl("drpsex")asDropDownList;
Labellblsex=DetailsView1.FindControl("lblsex")asLabel;
drpsex.DataSource=bindToDrop();
drpsex.DataBind();
drpsex.SelectedValue=lblsex.Text.Trim();
}
}
}
}

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前台
< formid = " form1 " runat = " server " >
< div >
< asp:DetailsViewID = " DetailsView1 " runat = " server " AutoGenerateRows = " False " Height = " 50px " Width = " 125px " OnItemCommand = " DetailsView1_ItemCommand " OnModeChanging = " DetailsView1_ModeChanging " OnModeChanged = " DetailsView1_ModeChanged " OnDataBound = " DetailsView1_DataBound " OnPreRender = " DetailsView1_PreRender " >
< Fields >
< asp:TemplateFieldHeaderText = " Name " >
< EditItemTemplate >
< asp:TextBoxID = " TextBox1 " runat = " server " Text = ' <%#Bind("name")%> ' ></ asp:TextBox >
</ EditItemTemplate >
< InsertItemTemplate >
< asp:TextBoxID = " TextBox1 " runat = " server " Text = ' <%#Bind("name")%> ' ></ asp:TextBox >
</ InsertItemTemplate >
< ItemTemplate >
< asp:LabelID = " Label1 " runat = " server " Text = ' <%#Bind("name")%> ' ></ asp:Label >
</ ItemTemplate >
</ asp:TemplateField >
< asp:TemplateFieldHeaderText = " Sex " >
< EditItemTemplate >
< asp:DropDownListID = " drpsex " runat = " server " DataSource = " <%#bindToDrop()%> " DataTextField = " sex " ></ asp:DropDownList >
</ EditItemTemplate >
< InsertItemTemplate >
< asp:TextBoxID = " TextBox2 " runat = " server " Text = ' <%#Bind("sex")%> ' ></ asp:TextBox >
</ InsertItemTemplate >
< ItemTemplate >
< asp:LabelID = " Label2 " runat = " server " Text = ' <%#Bind("sex")%> ' ></ asp:Label >

</ ItemTemplate >
</ asp:TemplateField >
< asp:TemplateField >
< ItemTemplate >
< asp:LabelID = " lblsex " runat = " server " Text = ' <%#Bind("sex")%> ' ></ asp:Label >
</ ItemTemplate >
</ asp:TemplateField >
< asp:TemplateFieldShowHeader = " False " >
< EditItemTemplate >
< asp:ButtonID = " Button1 " runat = " server " CausesValidation = " True " CommandName = " Update "
Text = " 更新 " />& nbsp; < asp:ButtonID = " Button2 " runat = " server " CausesValidation = " False "
CommandName = " Cancel " Text = " 取消 " />
</ EditItemTemplate >
< ItemTemplate >
< asp:ButtonID = " Button1 " runat = " server " CausesValidation = " False " CommandName = " Edit "
Text = " 编辑 " />
</ ItemTemplate >
</ asp:TemplateField >
</ Fields >
</ asp:DetailsView >

</ div >
</ form >