in my code, I was doinge.Item.Cells[0].Text = DataBinder.Eval(e.Item.DataItem,sBoundField).ToString();which replaces whatever in that column, what you are doing in your code?>>>则这个页面所有东西都显示不出来了open the HTML source in IE and check what's going on, one possibility is that you have unbalanced tags
remove e.Item.Cells[0].Text = DataBinder.Eval(e.Item.DataItem,sBoundField).ToString();but use<ItemTemplate> <asp:CheckBox id="Ckb_Sel" runat="server" Checked="False"></asp:CheckBox> <%# DataBinder.Eval(Container.DataItem, sBoundField) %>you can consider to change sBoundField to a public or protected property
1. make sBoundField a public or protected member or create a property for it, 2. remove this line string sBoundField = "";from dg_ItemDatabound3. change <%# DataBinder.Eval(Container.DataItem,"职位名称") %> ===> <%# DataBinder.Eval(Container.DataItem,sBoundField) %>
<asp:BoundColumn Visible="False" DataField="zyid" ReadOnly="True" HeaderText="id"></asp:BoundColumn>加在<Columns> <asp:TemplateColumn>之间后，则这个页面所有东西都显示不出来了，而
<asp:BoundColumn Visible="False" DataField="zyid" ReadOnly="True" HeaderText="id"></asp:BoundColumn>在另外一个例子上是好使的，
<asp:CheckBox id="Ckb_Sel" runat="server" Checked="False"></asp:CheckBox>
</ItemTemplate>可是为什么这段 <ItemTemplate> </ItemTemplate>之间的内容不显示呢？
<%@ Page Language="C#" %>
<%@ import Namespace="System.Data" %>
<%@ import Namespace="System.Data.SqlClient" %>
<script runat="server">string sBoundField = "";void Page_Load(object o, EventArgs e)
{
if (!IsPostBack)
{
BindData();
}
}void BindData()
{
SqlDataAdapter da = new SqlDataAdapter("select * from authors",
"server=localhost;database=pubs;uid=sa;pwd=;"); DataTable dt = new DataTable ();
da.Fill(dt); dg.DataSource = dt.DefaultView;
dg.DataBind();
}void dg_ItemDatabound(object source, DataGridItemEventArgs e)
{
if (e.Item.ItemType == ListItemType.Header)
{
DropDownList ddl = (DropDownList)e.Item.FindControl("ddl");
if (sBoundField == "")
sBoundField = ddl.SelectedItem.Value;
else
ddl.SelectedIndex = ddl.Items.IndexOf(ddl.Items.FindByValue(sBoundField));
} if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
{
e.Item.Cells[0].Text = DataBinder.Eval(e.Item.DataItem,sBoundField).ToString();
}}void TestSelection(object sender, EventArgs e)
{
DropDownList ddl = (DropDownList)sender;
sBoundField = ddl.SelectedItem.Value; BindData();}</script>
<html>
<head>
</head>
<body>
<form id="form1" runat="server">
<asp:DataGrid id="dg" runat="server" OnItemDataBound="dg_ItemDatabound" AutoGenerateColumns="False">
<Columns>
<asp:TemplateColumn>
<HeaderTemplate>
<asp:CheckBox id="Ckb_All" runat="server"></asp:CheckBox>
<asp:DropDownlist id="ddl" runat="server" OnSelectedIndexChanged="TestSelection" AutoPostBack="true">
<asp:ListItem Text="First Name" Value="au_fname" />
<asp:ListItem Text="Last Name" Value="au_lname" />
</asp:DropDownList>
</HeaderTemplate>
<ItemTemplate>
<asp:CheckBox id="Ckb_Sel" runat="server" Checked="False"></asp:CheckBox>
</ItemTemplate>
</asp:TemplateColumn>
</Columns>
</asp:DataGrid>
<asp:Button id="btn" runat="server" Text="Submit"></asp:Button>
</form>
</body>
</html>
<asp:CheckBox id="Ckb_Sel" runat="server" Checked="False"></asp:CheckBox>
<%# DataBinder.Eval(Container.DataItem,"职位名称") %></ItemTemplate>
我现在就是不知道按你的方法如何显示别的字段，没有DropDownlist触发的固定字段
e.Item.Cells[0].Text = DataBinder.Eval(e.Item.DataItem,sBoundField).ToString();but use<ItemTemplate>
<asp:CheckBox id="Ckb_Sel" runat="server" Checked="False"></asp:CheckBox>
<%# DataBinder.Eval(Container.DataItem, sBoundField) %>you can consider to change sBoundField to a public or protected property
------------------------------------------------------------------------------
public void dg_ItemDatabound(object source, DataGridItemEventArgs e)
{
string sBoundField = "";
string sql = " select * from test_dropdown" ; if (e.Item.ItemType == ListItemType.Header)
{
DropDownList ddl = (DropDownList)e.Item.FindControl("ddl");
DataSet C1 = reg_data.dbbind( sql );
ddl.DataSource=C1;
ddl.DataTextField="dname";
ddl.DataValueField="dname";
ddl.DataBind();
if (sBoundField == "")
sBoundField = ddl.SelectedItem.Value;
else
ddl.SelectedIndex = ddl.Items.IndexOf(ddl.Items.FindByValue(sBoundField));
}
string sBoundField = "";from dg_ItemDatabound3. change
<%# DataBinder.Eval(Container.DataItem,"职位名称") %>
===>
<%# DataBinder.Eval(Container.DataItem,sBoundField) %>