赐教 e.Item.FindControl("Label1").Controls未将对象引用设置到对象的实例。

[cool_jack2006]

我想通过在datagrid_ItemDataBound事件里得到<%# DataBinder.Eval(Container.DataItem,"path" )%>当前的值，还有得到<%# DataBinder.Eval(Container.DataItem,"path" )%>值之后向附值Image1.ImageUrl

<asp:DataGrid ID="mydatagrid" runat="server" AutoGenerateColumns="False" Width="100%"
ShowHeader="False" CellPadding="4" ForeColor="#333333" GridLines="None" OnItemDataBound="mydatagrid_ItemDataBound">
<Columns>
<asp:TemplateColumn>
<ItemTemplate>
<table>
<tr>
<td rowspan="2" style="text-align: center;">
<div>
<asp:Label Visible="false" ID="Label1" runat="server" Text='<%# DataBinder.Eval(Container.DataItem,"path" )%>'></asp:Label>
<asp:Image ID="Image1" runat="server" /> </div>
</td>
</tr>
</table>
</ItemTemplate>
</asp:TemplateColumn>
</Columns>
<FooterStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
<EditItemStyle BackColor="#999999" />
<SelectedItemStyle BackColor="#E2DED6" Font-Bold="True" ForeColor="#333333" />
<PagerStyle BackColor="#284775" ForeColor="White" HorizontalAlign="Center" />
<AlternatingItemStyle BackColor="White" ForeColor="#284775" />
<ItemStyle BackColor="#F7F6F3" ForeColor="#333333" />
<HeaderStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
</asp:DataGrid>


protected void mydatagrid_ItemDataBound(object sender, DataGridItemEventArgs e)
{
foreach (Control c in e.Item.FindControl("Label1").Controls)
{
Label label = (Label)c;
string path = label.Text;
}
}

[yutian_31]

你把Visible="true"试下

[Crystalzhou]

if (null==e.Item)
return;
if(e.Item.ItemIndex<0)
return;
Label label = e.Item.FindControl("Label1") as Label;
if(label != null)
string path = label.Text;

[msy_84]

if (e.Item.ItemType == ListItemType.AlternatingItem || e.Item.ItemType == ListItemType.EditItem)
{
foreach (Control c in e.Item.FindControl("Label1").Controls)
{
Label label = (Label)c;
string path = label.Text;
}
}

ITEMPLATE 模板是内容行，而datagrid_ItemDataBound 事件是从HEADER 模板，到FOOTER 开始遍历的...
这样，试一下

[阿非]

protected void mydatagrid_ItemDataBound(object sender, DataGridItemEventArgs e) 
    { 
        if(e.Item.ItemType==ListItemType.AlternatingItem||e.Item.ItemType==ListItemType.Item)
{
      Label lbl=  e.Item.FindControl("Label1") as Label;
      if(lbl!=null)
       {
           string path = lbl.Text; 
      }
}
    }

[像海风一样平静]

五楼的很清楚的

[freeboy827]

foreach (Control c in e.Item.FindControl("Label1")) 
        { 
            Label label = (Label)c; 
            string path = label.Text; 
        } 

[jmghoul]

说明controls是null

[ncjcz]

如果你只有表头的话，加一句
if (e.Item.ItemIndex > 0)
把表头过滤掉就可以了，因为表头里没有Label1

还有：e.Item.FindControl("Label1")找到的就是Label1了，不需要再遍历找他的子控件

这样写吧
if (e.Item.ItemIndex > 0)
{

Label label = e.Item.FindControl("Label1") as Label;
if(label != null)
string path = label.Text;


}