Forms Data Controls :: Using Custom Text Before Eval?

Mar 4, 2011

I have a repeater that has been given a datasource from my database containing pictures. The problem is that when i create and log a user into my site i send him to a folder that has no access from others than the ones with a roles called User. When he creates his profile, he uploads a picture which is saved in the same folder "User/picture/picturename" and in the database "picture/picturename".

Now i need to pull this picture to the Default page page where users are not logged in. If i add an Image Control to the frontpage with ImageUrl='<%#Eval ("PictureThumbURL") %>' it tries to pull out the picture from the folder User which is obvious that it can't since it lacks the User/ in front.

Is it possible to get this picture by manually adding User/ to the ImageUrl='<%#Eval ("PictureThumbURL") %>' and if so, how?

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Forms Data Controls :: Include Text In Eval?

Nov 4, 2010

<asp:Label ID="Label13" Runat="Server" Text='<%# (decimal)Eval("CelaDnevnica") > 0 && (int)Eval("CelaDnevnicaStevilo") > 0 ?
t. ((double.Parse(Eval("CelaDnevnica").ToString())) / (double.Parse(Eval("CelaDnevnicaStevilo").ToString()))).ToString("0.00"): "" %>' ></asp:Label>

How to include text " t." according to a conditional sentence?If a conditional sentence is completed, the printed text " t." As well as CelaDnevnica / CelaDnevnicaStevilo

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Forms Data Controls :: Putting A Text Element Inside Of Bind() Or Eval() That Appears When Data Is Present?

Feb 24, 2010

I have a <%Bind("prict")%> and I want to put the word Pri: in front of it but, it even appears if this field is null. How do I do this?

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Forms Data Controls :: Develop A Custom Data-bound Control Which Will Contain, Few Text-boxes, Drop-down Lists And Labels?

Mar 24, 2010

I need to develop a custom data-bound control which will contain, few text-boxes, drop-down lists, labels, and other standard web-server controls. And, I want to be able to load this control from a web page on button click. When the user enters any data to any of its child controls, i should be able to save, and also retrieve when the data-bound control is loaded again. Also, the data in the child control should retain their value on postback. What approach should i follow?

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Custom Server Controls :: Need Custom Text Box Control With DataSource,TableName,ColumnName Property?

Nov 26, 2010

I need to create one custom text box control which should be bind with data base.

I am referring following link...

I used DataBoundControl to create my control but i am not able to do it properly.

public class SimpleTextBoxControl : DataBoundControl
private TextBox nameTextBox;
public string DataTextField
object o = ViewState["DataTextField"];
return ((o == null) ? string.Empty : (string)o);
ViewState["DataTextField"] = value;
Description("The text to display on the link."),
public virtual string DataTexValue
string s = (string)ViewState["Text"];
return (s == null) ? String.Empty : s;
ViewState["Text"] = value;
protected override void PerformDataBinding(IEnumerable retrievedData)
if (retrievedData == null)
nameTextBox = new TextBox { ID = "nameTextBox" };
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Custom Server Controls :: Custom Control - ImageButton With Text

Mar 25, 2010

I've have been searching the web for weeks trying to find a solution for my application buttons. What I want is a control that will display the various buttons for my application from the splash page down to the save/submit. The control needs to be able to handle the following:

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C# - Getting Eval To Work In A Databound, Templated Custom Control?

Sep 29, 2010


I'm putting together a templated, databound control. Presently it works with the following syntax...
<cc:ItemChooserControl ID="ItemChooser" runat="server">
<h4><%# DataBinder.Eval(Container.DataItem, "DisplayName") %></h4>


What I would like though is that the shorter, simpler Eval would work instead.
<h4><%# Eval("DisplayName") %></h4>
What I get however when using straight Eval is an error:
Databinding methods such as Eval(), XPath(), and Bind() can only be used in the context of a databound control.


I'm databinding to a custom HtmlTableCell...
public class TitleTemplateTableCell: HtmlTableCell, INamingContainer
private object m_DataItem;
public virtual object DataItem
get { return m_DataItem; }
set { m_DataItem = value; }

With the following custom DataBind (non-related code removed)...

foreach (object dataItem in dataSource) {
TitleTemplateTableCell title = new TitleTemplateTableCell();
TitleTemplate.InstantiateIn(title); // TitleTemplate is the template property
title.DataItem = dataItem;

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Forms Data Controls :: If Statement And Eval From A Datalist C#?

Jan 25, 2011

I have a datalist and would like to add an if statement within the Text part of my label.

Tried the following but it doesn't work

Note: if I do a normal eval Text='<%# Eval("UI_successful_trans")%>' the value returned from the database will be 1 or 0. Depending of which value is returned, I would like to have the text "Win" or "Lose" returned. ( I know that this could easily be done in code behind but I would like to know if it is

possible to to do that inline ?



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Forms Data Controls :: How To Concate 2 Eval In Listview

Jun 9, 2010

i think its a simple problem but i am strugling with it i have list view, and in item template i am bounding a label with 2 fields that is first name and last name

i am tring this code

Text='<%# Eval("firstname") + Eval("lastname") %>'

but it gives error taht Operator '+' cannot be applied to operands of type 'object' and 'object' for single value it works that is

Text='<%# Eval("firstname") %>'
and even for constant concatenate it works that is
Text='<%# "India" + Eval("firstname") %>'
/> .... is working fine

I tried different arrangement but its not working that is

Text='<%# Eval("firstname","Lastname") %>'
Text='<%# Eval("firstname" + "Lastname") %>'

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Forms Data Controls :: BC30451: Name 'Eval' Is Not Declared

Apr 27, 2010

My web application works if I don't compile it, when I compile, it gives me this nasty error and I am clueless to what I did wrong?

Here is the error: No where in my line 113 has any Eval nor my entire page has any Eval, I used Bind so what is going on? the strange thing is if I leave the page as is with out Publish web site option the same page works perfectly fine.

BC30451: Name 'Eval' is not declared

Line 111: <asp:TemplateField HeaderText="Property Name" SortExpression="PropertyName">
Line 112: <ItemTemplate>
Line 113: <asp:Label ID="PropertyNameLabel" runat="server" Text='<%# Bind("PropertyName") %>'></asp:Label>

Source File: c:inetpubwwwrootJPM2010UserPropertySearch.aspx Line: 113

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Multiple Eval In Label Text?

May 17, 2010

Why doesnt this work:

<asp:Label ID="lblName" runat="server" Text='<%# Eval("Title")%> <%# Eval("Forename")%> <%# Eval("Surname")%>' ></asp:Label>
And what is the best way to achive this?

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Forms Data Controls :: Data Bind In GridView At Level Through Eval Function?

Jan 12, 2011

I want to bind two column on single level in GridView

I m using this code

<asp:Label ID="Label1" runat="server" Text='<%# Eval("lChannelName")+ " " +Eval("lTransformData") %>' >

But i want to bind First column at Left hand side and second column from right hand side

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Forms Data Controls :: GridView Data Binding With Nested Query Instead Of Eval()?

Jan 11, 2010

I ran into this kind of situation many times without a nice solution. Binding a data source to a gridview and one of the column require nested query. Is it possible to have a callback function other than Eval()?

something like CallbackFunc(Eval("SomeField"));

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Forms Data Controls :: Storing Eval Value In A Variable Or IF Statement?

Jul 8, 2010

How do I store an Eval in a variable or use the value of the Eval in an if statement?

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Forms Data Controls :: Conditional Eval Statement In Gridview?

Nov 18, 2010

I have a conditional Eval statement in a Gridview that returns a boolean result to display an image if two datafields(strings) are identical:

Visible='<%# Eval("customerA").Equals(Eval("customerB")) %>'

Works great except I don't want the image to display if both datafields are empty. How can I add that logic into this Eval stmt?

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Forms Data Controls :: ListView Renders All Eval Statements Except One?

Feb 16, 2010

I have a ListView bound to a database view (vw_Reunions). The Eval statements in the ItemTemplate render the data in vw_Reunions just fine but I have one in the LayoutTemplate that doesn't display. Can anyone tell me why?


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Forms Data Controls :: Date Bind By Eval Method?

Feb 2, 2010

I m tring date bind from database.

I have a date=2/2/2010 12:00:00 AM

i want to show only 2/2/2010

I m use that code source with a Repiter control <%#Eval("Course_Date")%>

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Forms Data Controls :: Use DataBinder.Eval In RowCommand Event?

Mar 16, 2011

I am trying to access column value by using DataBinder.Eval on RowCommand event of Gridview. It always return NOT SET TO ANY INSTANCE error for eveytime. I know how to do this by employing a label control in ItemTemplate, but am trying to find a way to bypass.

Error returned by DataBinder.Eval(row.DataItem, "LinkToInvoice").ToString



VB Code Behind


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Forms Data Controls :: Use Eval Or Bind In A Databound Control?

Sep 8, 2010

I have a repeater I've databound with a generic arraylist from a LINQ query (.ToList() ) in the code behind.

I was using

<%# Bind("FirstName")%> but noticed
<%# Eval("FirstName")%> works just as well.

Is it better to use Eval or Bind? or does it depend on the situation?

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Forms Data Controls :: Getting A Boolean Response From An Eval Operator?

Oct 18, 2010

I would like to use an eval stmt to return a true/false for the visible property of a HyperLinkField. IF clientComment exists, I would like it to return True, if clientComment is null or "", then would like it to return False.

By default I noticed it already will not show the hyperlink if clientComment is Null, however the bug I'm running into is if the client enters a comment but then later deletes it so it's not null but blank, or "", in which case the HyperLinkField will incorrectly display. Here's my attempt so far but I'm obviously hitting a wall:

Visible='<%# Eval("clientComment")==Null or =="",False) %>'

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Forms Data Controls :: DataBinder.Eval And Null Values?

Aug 16, 2010

I have a hiddenfield in my datalist .....and its databinded like this

<asp:HiddenField ID="SecondLevelCategory" runat="server" Value='<%# DataBinder.Eval(Container.DataItem, "SecondLevelID") %>' />

the problem arise when this datacolumn in my database have a null value, it throws an error can I get this to work so that DataBinder.Eval can take a null value?

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Forms Data Controls :: Control Parameter EVAL From A Formview Item

Aug 31, 2010

I have a Formview ('formview1') with a pager. I also have a gridview ('gridview1') linked to a SQL datasource ('History'). I need to set the SelectParameter ('Serial') of the datasource to be the value of a field on the current page in the formview. The value i need to get is in the ItemTemplate and is a label called 'SerialNumberLabel'. So, something like:

<asp:ControlParameter Text = "Eval fromview1.currentpage.itemtemplate.SerialNumberLabel" >

I also need to ensure that the SQL source and gridview rebind when the pager is activated.

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Forms Data Controls :: Using Eval Method In GridView Footer Template?

Nov 18, 2010

I am using Footer template in gridview for first time..

I am unable to show anything in the footer template with eval() method...

Here is some of my code in the gridview..

<asp:CommandField ShowSelectButton="True" FooterText="Amount" />
<asp:TemplateField HeaderText="ColorCode">
<asp:Label ID="lblColorCode" runat="server"><%# Eval("ColorCode")%> </asp:Label>
<%# Eval("Total")%>

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Forms Data Controls :: How To Add Brackets To DataList Eval Statement When Displayed

Mar 15, 2011

I am using a DataList Control and with the Eval Bind below in the Item Template.


I want to do is add a bracket each side of the "CountryName" so it displays as (Spain) for example.

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Forms Data Controls :: Programmatically Change ItemTemplate Eval Statements?

Dec 21, 2010

I have a GridView with an TemplateField:

<asp:GridView runat="server" ID="gvReport" ondatabinding="gvReport_DataBinding">
<asp:TemplateField >
<asp:Label runat="server" Text='<%#Eval("answers") %>' /> out of <asp:Label runat="server" Text='<%#Eval("questions") %>' />
</asp:TemplateField >

What I'd like to do on gvReport_DataBinding is change the field the Evals point to, so I end up with something like:

<asp:Label runat="server" Text='<%#Eval("answers_foo") %>' /> out of <asp:Label runat="server" Text='<%#Eval("questions_foo") %>' />

I have gotten this far:

TemplateField tf = ((TemplateField)gvReport.Columns[0]);

But I'm not sure what I should be doing with tf. tf.SomeProperty.Replace("answers", "answers_foo")?

Or am I barking up the wrong airplane on this one?

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