Question

bind DataColumn ToString.Replace

Asked by: ncrocker

Hello,
Using .net 3.5 - ods to SQL 2005

I am pretty sure this should be simple, but I am not finding any solution to ToString.Replace for the value rendering of a DataColumn....

Here is the aspx Code where the datacolumn is called:
<asp:GridView ID="gvClients" runat="server" AutoGenerateColumns="False" DataSourceID="odsClients"
                DataKeyNames="clientID,clientTypeID" Width="100%">
                <Columns>
                    <asp:BoundField DataField="clientID" HeaderText="clientID" SortExpression="clientID"
                        Visible="False" />
                    <asp:TemplateField HeaderText="Clients" SortExpression="clientName">
                        <EditItemTemplate>
                            <asp:TextBox ID="TextBox1" runat="server" Text='<%# Bind("clientName") %>'></asp:TextBox>
                           
                        </EditItemTemplate>
                        <ItemTemplate>
                            <table border="0" cellpadding="0" cellspacing="0" width="100%">
                                <tr>
                                    <td>
                                        <asp:Label ID="lblClientName" runat="server" Font-Bold="True" Text='<%# Bind("clientName") %>'></asp:Label></td>
                                </tr>

Here is what I've attempted in the CodeBehind Which does not work.. The "Handles" piece is wrong, but, obviously, I don't know what it should be OR have it completely WRONG...
Please Help...

Protected Sub clientName(ByVal sender As System.Object, ByVal e As System.Web.UI.DataBinder) Handles ItemTemplate.lblClientName
        Dim str1 As String = "clientName"
        Dim RepStr As String = str1.Replace("*", " ")
       
        Console.WriteLine("Replaced String:" + RepStr.ToString())
    End Sub

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Asked On
2009-08-16 at 05:54:26ID24656232
Tags

.net 3.5 vb

,

Bind DataColumn

,

ods

,

gridView

,

ItemTemplate

Topics

.NET Framework 3.x versions

,

.NET

,

SQL Query Syntax

Participating Experts
1
Points
250
Comments
7

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Answers

 

by: abelPosted on 2009-08-16 at 06:00:59ID: 25108837

I don't see your full code, so I assume there's a reason for the whole table inside one cell ;-)

There are two things to solve this: use the OnDataBound that each object has, including Label, or use the following line where it now says "Bind":

Eval("clientname").Replace("*", " ")

and you should be sorted. I believe that's easier than using the code behind here.

-- Abel --

PS: there's no such thing as a Handles ItemTemplate.lblClientName, as that's not an event. Because the label is hidden in a naming container (the gridview and the gridviewrow), you can only add events by using the declarative syntax: OnDataBound="lblClientName_OnDataBound", and not use the Handles-statement.

-- Abel --

 

by: abelPosted on 2009-08-16 at 06:02:38ID: 25108844

PS: just a friendly remark for next time asking a similar question: this q. could receive more attention in the asp.net zone, as the GridView is an ASP.NET object (as is anything in an ASP.NET project).

 

by: ncrockerPosted on 2009-08-16 at 06:31:00ID: 25108935

Thanks Abel... & Thanks for the tip on where to post q's like this.
Sorry, I only included the code where the data column is called....
Don't know what you mean by " use the OnDataBound that each object has, including Label"
I, of course, went for your other suggestion to
Eval("clientname").Replace("*", " ")

but with that I get a Compilation Error "Option Strict On disallows late binding".

 

by: ncrockerPosted on 2009-08-16 at 06:56:33ID: 25109015

And, Sorry the
<asp:GridView ID="gvClients" runat="server" AutoGenerateColumns="False" DataSourceID="odsClients"
                DataKeyNames="clientID,clientTypeID" Width="100%"> . . .
Code is in a UserControl .ascx file...

 

by: abelPosted on 2009-08-16 at 07:23:30ID: 25109099

> "Option Strict On disallows late binding".

Not a problem, if you have Option Strict on, that means you need to do an explicit cast or, in your case, an explicit ToString() (the result of Eval is an object, not a string):

Eval("clientname").ToString().Replace("*", " ")

 

by: abelPosted on 2009-08-16 at 07:35:33ID: 25109135

I made typing error: it is not OnDataBound, but OnDataBinding, which occurs "while databinding". Inside that event, you can use Eval just the same, it is a bit easier sometimes to code and keeps the aspx and vb code strictly separated.

Here's the same method using OnDataBinding event and putting the Eval in the code behind:

<!-- ASPX code -->
<asp:Label ID="lblClientName" 
    runat="server" 
    Font-Bold="True"
    OnDataBinding="lblClientName_DataBinding" />
 
<!-- VB code in the code behind -->
Protected Sub lblClientNameDataBinding(ByVal sender As Object, ByVal e As EventArgs)
   ' sender will always be of type Label, we can safely cast '
   Dim lbl As Label = CType(sender, Label)
   Dim clientName As String = Eval("clientname")
   lbl.Text = clientName.Replace("*", " ")
End Sub

                                              
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by: ncrockerPosted on 2009-08-16 at 10:08:55ID: 31616265

Perfect - Thank You So Much!

20120131-EE-VQP-002

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