The following code works fine:
<script runat="server">
Dim strName As String = "Arpan"
Sub Page_Load(ByVal obj As Object, ByVal ea As EventArgs)
Page.DataBind()
End Sub
</script>
<form runat="server">
<asp:Label id="lblMessage " Text=<%# strName %runat="server"/>
</form>
But if the line
Dim strName As String = "Arpan"
is placed inside the Page_Load sub so that the script code looks like
this:
<script runat="server">
Sub Page_Load(ByVal obj As Object, ByVal ea As EventArgs)
Dim strName As String = "Arpan"
Page.DataBind()
End Sub
</script>
then the following error gets generated:
Name 'strName' is not declared.
pointing to the line
<asp:Label id="lblMessage " Text=<%# strName %runat="server"/>
Why so?
Thanks,
Arpan 4  1821 
Why not just have a line like
lblMessage.Text = strName
In your Page_Load event handler.
"Arpan" wrote:
The following code works fine:
<script runat="server">
Dim strName As String = "Arpan"
Sub Page_Load(ByVal obj As Object, ByVal ea As EventArgs)
Page.DataBind()
End Sub
</script>
<form runat="server">
<asp:Label id="lblMessage " Text=<%# strName %runat="server"/>
</form>
But if the line
Dim strName As String = "Arpan"
is placed inside the Page_Load sub so that the script code looks like
this:
<script runat="server">
Sub Page_Load(ByVal obj As Object, ByVal ea As EventArgs)
Dim strName As String = "Arpan"
Page.DataBind()
End Sub
</script>
then the following error gets generated:
Name 'strName' is not declared.
pointing to the line
<asp:Label id="lblMessage " Text=<%# strName %runat="server"/>
Why so?
Thanks,
Arpan
clickon, I very well am aware of the fact that it can be done in the
way you have shown which, I believe, is the easiest way out but being a
newbie as far as DataBinding is concerned (which I thought goes without
saying since had I not known that simple 1-line code that you have
shown which any ASP.NET newbie learns at the very beginning, I don't
think I, or for that matter, any newbie, would have posted this basic
question on DataBinding), I did like to grasp the fundamentals of
DataBinding.
Moreover I am not asking for any alternative code; rather I did like to
know why the error.gets generated when the variable "strName" is
declared & assigned a value in the Page_Load sub.
Arpan
clickon wrote:
Why not just have a line like
lblMessage.Text = strName
In your Page_Load event handler.
"Arpan" wrote:
The following code works fine:
<script runat="server">
Dim strName As String = "Arpan"
Sub Page_Load(ByVal obj As Object, ByVal ea As EventArgs)
Page.DataBind()
End Sub
</script>
<form runat="server">
<asp:Label id="lblMessage " Text=<%# strName %runat="server"/>
</form>
But if the line
Dim strName As String = "Arpan"
is placed inside the Page_Load sub so that the script code looks like
this:
<script runat="server">
Sub Page_Load(ByVal obj As Object, ByVal ea As EventArgs)
Dim strName As String = "Arpan"
Page.DataBind()
End Sub
</script>
then the following error gets generated:
Name 'strName' is not declared.
pointing to the line
<asp:Label id="lblMessage " Text=<%# strName %runat="server"/>
Why so?
Thanks,
Arpan
Arpan,
when you declare a variable inside a page load event handler, its not a
member of page class, so when asp.net generates c# code for your there
is no variable named strName, and hence is complains.
Following line of code would look for a protected (private if not using
code behind model) property/variable named strName in your page class
<asp:Label id="lblMessage " Text=<%# strName %runat="server"/>
hth
Arpan wrote:
clickon, I very well am aware of the fact that it can be done in the
way you have shown which, I believe, is the easiest way out but being a
newbie as far as DataBinding is concerned (which I thought goes without
saying since had I not known that simple 1-line code that you have
shown which any ASP.NET newbie learns at the very beginning, I don't
think I, or for that matter, any newbie, would have posted this basic
question on DataBinding), I did like to grasp the fundamentals of
DataBinding.
Moreover I am not asking for any alternative code; rather I did like to
know why the error.gets generated when the variable "strName" is
declared & assigned a value in the Page_Load sub.
Arpan
clickon wrote:
>Why not just have a line like
lblMessage.Tex t = strName
In your Page_Load event handler.
"Arpan" wrote:
>>The following code works fine:
<script runat="server">
Dim strName As String = "Arpan"
Sub Page_Load(ByVal obj As Object, ByVal ea As EventArgs)
Page.DataBind()
End Sub
</script>
<form runat="server">
<asp:Label id="lblMessage " Text=<%# strName %runat="server"/>
</form>
But if the line
Dim strName As String = "Arpan"
is placed inside the Page_Load sub so that the script code looks like
this:
<script runat="server">
Sub Page_Load(ByVal obj As Object, ByVal ea As EventArgs)
Dim strName As String = "Arpan"
Page.DataBind()
End Sub
</script>
then the following error gets generated:
Name 'strName' is not declared.
pointing to the line
<asp:Label id="lblMessage " Text=<%# strName %runat="server"/>
Why so?
Thanks,
Arpan
Thanks, Ashish, for your response.
What about variables declared within subs (be it user-defined or
built-in) other than the Page_Load sub - aren't they members of the
Page class as well? If yes, does that mean variables declared within
the <script runat="server"t ag but outside any sub automatically
become members of the Page class?
Thanks,
Regards,
Arpan
ashish wrote:
Arpan,
when you declare a variable inside a page load event handler, its not a
member of page class, so when asp.net generates c# code for your there
is no variable named strName, and hence is complains.
Following line of code would look for a protected (private if not using
code behind model) property/variable named strName in your page class
<asp:Label id="lblMessage " Text=<%# strName %runat="server"/>
hth
Arpan wrote:
clickon, I very well am aware of the fact that it can be done in the
way you have shown which, I believe, is the easiest way out but being a
newbie as far as DataBinding is concerned (which I thought goes without
saying since had I not known that simple 1-line code that you have
shown which any ASP.NET newbie learns at the very beginning, I don't
think I, or for that matter, any newbie, would have posted this basic
question on DataBinding), I did like to grasp the fundamentals of
DataBinding.
Moreover I am not asking for any alternative code; rather I did like to
know why the error.gets generated when the variable "strName" is
declared & assigned a value in the Page_Load sub.
Arpan
clickon wrote:
Why not just have a line like
lblMessage.Text = strName
In your Page_Load event handler.
"Arpan" wrote:
The following code works fine:
<script runat="server">
Dim strName As String = "Arpan"
Sub Page_Load(ByVal obj As Object, ByVal ea As EventArgs)
Page.DataBind()
End Sub
</script>
<form runat="server">
<asp:Label id="lblMessage " Text=<%# strName %runat="server"/>
</form>
But if the line
Dim strName As String = "Arpan"
is placed inside the Page_Load sub so that the script code looks like
this:
<script runat="server">
Sub Page_Load(ByVal obj As Object, ByVal ea As EventArgs)
Dim strName As String = "Arpan"
Page.DataBind()
End Sub
</script>
then the following error gets generated:
Name 'strName' is not declared.
pointing to the line
<asp:Label id="lblMessage " Text=<%# strName %runat="server"/>
Why so?
Thanks,
Arpan
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