如何从DataList ItemTemplate中的标签获取文本? [英] How to get text from a label in a DataList ItemTemplate ?

问题描述

我使用Visual Web Developer 2008 Express.
我在DataList ItemTemplate中有Label1.我希望使用一个按钮从该标签获取文本，并将其添加到页面其他位置的TextBox1中的文本中.

我知道如何从ASP.NET网页上的标准标签执行此操作，但无法解决如何从DataList ItemTemplate中的标签获取文本的情况.
这是我认为应该做的:-

Hi,
I use Visual Web Developer 2008 Express.
I have Label1 in a DataList ItemTemplate. I wish to use a button to get the text from that label and add it to text in TextBox1 which is elsewhere on the page.

I know how to do this from a standard label on a ASP.NET web page but cannot work out how to get the text from a label inside a DataList ItemTemplate.

This is what I thought I should do:-

Protected Sub submit_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles submit.Click
TextBox1.Text = TextBox1.Text & " " & DataList1.ItemTemplates.ItemTemplate.Label2.Text
End Sub

我以为是因为在数据列表模板中选择标签时，属性窗口标题中写的是"DataList1.ItemTemplates.ItemTemplate.Label2-System.Web.UI.WebControls.Label".

当我尝试这样做时，我在"DataList1.ItemTemplates"下看到一个蓝色花体，如果将鼠标悬停在该花体上，则会出现错误框，提示" ItemTemplates"不是"System.Web.UI.WeControls.DataList"的成员

如何从DataList ItemTemplate 中的标签获取文本?

感谢您提供的任何帮助

I thought that because "DataList1.ItemTemplates.ItemTemplate.Label2 - System.Web.UI.WebControls.Label" - is what is written in the properties window header when I select the label in the DataList template.

When I try that, I get a Blue Squiggle under "DataList1.ItemTemplates" and if I hover over the squiggle the error box comes up saying " ''ItemTemplates'' is not a member of ''System.Web.UI.WeControls.DataList''

How to get text from a label in a DataList ItemTemplate ?

Thanks for any help on offer

推荐答案

而不是使用ItemTemplates，您可以在按钮的click事件中使用DataListItemCollection.

您可以通过
找到您的标签

Rather then using ItemTemplates you can use DataListItemCollection in button''s click event.

you can find your label with

DataList1.Items(0).FindControl("Lable2")

Thanks Mehul,

I got it sorted but your method does look like it could be simpler simpler.

The following does work.
VB :
<pre><pre lang="vb">Protected Sub DataList1_ItemCommand(ByVal source As Object, ByVal e As System.Web.UI.WebControls.DataListCommandEventArgs) Handles DataList1.ItemCommand
    If e.CommandName = &quot;Item&quot; Then
        Dim label1 As Label = DirectCast(DataList1.Items(e.Item.ItemIndex).FindControl(&quot;Label1&quot;), Label)
        Dim label2 As Label = DirectCast(DataList1.Items(e.Item.ItemIndex).FindControl(&quot;Label2&quot;), Label)
        TextBox3.Text = TextBox3.Text &amp; vbCrLf &amp; TextBox4.Text &amp; &quot; &quot; &amp; &quot;X&quot; &amp; &quot; &quot; &amp; label2.Text &amp; &quot; &quot; &amp; label1.Text
    End If

End Sub</pre>
</pre>

C# :

<pre><pre lang="C++">protected void DataList1_ItemCommand(object source, DataListCommandEventArgs e)
{  if (e.CommandName == "Item")
    {
        Label label1 = (Label)DataList1.Items[e.Item.ItemIndex].FindControl("Label1");
        Label label2 = (Label)DataList1.Items[e.Item.ItemIndex].FindControl("Label2");
        TextBox2.Text = TextBox2.Text + label1.Text + " " + label2.Text + Environment.NewLine;
    }
}

我很想知道您完整的方法将如何启发我.

< pre lang ="C ++">再次感谢您的努力和建议.</pre>

I would be interested to know how your complete method would be kind enough to enlighten me.

<pre lang="C++">Thanks again for your effort and advice.</pre>

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