Data Controls :: How To Use EVAL Function Outside GridView DataBound Control
Dec 29, 2012
this is my hyperlink code that is in gridview
<ItemTemplate>
<asp:HyperLink ID="lnkRemove2" runat="server" CssClass="LBP3E" Text = "more..." NavigateUrl='<%# "state/view.aspx?BehCode=" + Request.QueryString["BehCode"] + "&Id=" + Eval("Id") %>'></asp:HyperLink>
</ItemTemplate>
I want do some thing like that for my button control that is not in gridview it is out of grid view...HOw I can do it?
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Similar Messages:
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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Mar 9, 2010
I have a big problem...I have made a page has a Data FormView controland the insert template of this Formview control has DropDownList to allow the user to choose section (SectionsDDList)..and there's also another DropDownList allow the user to choose a teacher (TeachersDDList)...more infothe SectionsDDList get the section list from SqlDataSource control which the "Select Command" of is:"SELECT section_id,section_id FROM sections"the TeachersDDList get the teachers list from another SqlDataSource control which the "Select Command" of is:"SELECT teacher_id,teacher_name FROM teachers WHERE (section_id = @section_id)"finallyI want the TeachersDDList to be filled with teachers according to the selected section from the SectionsDDList...So,I enable the Auto postBack function of the SectionsDDListand add the next code for the SectionsDDList_SelectedIndexChanged event:TeachersDataSource.SelectParameters["section_id"].DefaultValue = ((DropDownList)sender).SelectedValue;be aware that both of the SectionsDDList & TeachersDDList have been Bounding to a column...and the problem I have faced is that:Exception Details: System.InvalidOperationException: Databinding methods such as Eval(), XPath(), and Bind() can only be used in the context of a databound control.maybe you want to know the Stack Trace:[InvalidOperationException: Databinding methods such as Eval(), XPath(), and Bind() can only be used in the context of a databound control.]
System.Web.UI.Page.GetDataItem() +93
System.Web.UI.TemplateControl.Eval(String expression) +33
ASP.cpanel_managecourses_aspx.__DataBinding__control82(Object sender, EventArgs e) in
[code]...
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May 7, 2015
<asp:TemplateField HeaderText="Is Activate ?">
<ItemTemplate>
<a href="#" onclick='fnViewRemarksTest(<%#DataBinder.Eval(Container.DataItem,"CustomerId")%>)'><%#Eval("IsActivated ")%></h3></a>
</ItemTemplate>
</asp:TemplateField>
Is Activated is a boolean data type column in Sql.
I want to Show that, when IsActivated is true text will be "User Is Active" and when false , the text will be "User Is not activate" ...
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May 7, 2015
How do I pass Hidden Variable to javacript function on GridView hyperlink click.Below is the code used
<asp:GridView ID="gridMicroscopicCode" runat="server" ...
<ItemTemplate>
<table id="Table2" cellpadding="0" style="border-width: 0px; width: 100%;" class="tableBorder" runat="server">
<tr class="botborder1">
<td style="width: 25%;">
<input id="Hidden1" runat="server" value='<%# Bind("preferenceid")%>' type="hidden" />
<asp:HyperLink ID="hypMicroscopicPopUpEdit" runat="server"
Target="_self" NavigateUrl="javascript: EncryptDataFunc('VAAddEditMicroscopic.aspx?editoption=yes&queryprefid=' + <%# Hidden1.value %>);">
</asp:HyperLink>
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Apr 17, 2014
Use Multiple Eval Fields in ASP.Net GridView ItemTemplate
I have a folder in my website project as "MAINIMAGES",inside that all the image folders that are fetched from database "GALLERY folder" are located
How to locate my image
MAINIMAGES>FOLDER>IMAGE
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May 21, 2013
According below thread I had problem with showing date to persian and solved it
Error-Occure-when-want-to-show-date/?s=2#Replies
Now this problem happen for below code I used datalist to showing date
</asp:TemplateField>
<asp:TemplateField ItemStyle-Width = "100px" ItemStyle-HorizontalAlign="Center">
<ItemTemplate>
<%# System.Convert.ToDateTime(miladitoshamsi(Eval("Date"))).ToString(" yyyy/MM/dd") %>
[Code] ....
ERROR : Server Error in '/behtop website' Application.
Year, Month, and Day parameters describe an un-representable DateTime.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception
Details: System.ArgumentOutOfRangeException: Year, Month, and Day parameters describe an un-representable DateTime.
Source Error:
Line 231: DateTime miladi = Convert.ToDateTime(miladi1);
Line 232: System.Globalization.PersianCalendar shamsi = new System.Globalization.PersianCalendar();
Line 233: DateTime shamsidate = new DateTime(shamsi.GetYear(miladi), shamsi.GetMonth(miladi), shamsi.GetDayOfMonth(miladi)); Line 234: //DateTime shamsidate = new DateTime(shamsi.GetYear(miladi), shamsi.GetMonth(miladi), shamsi.GetDayOfMonth(miladi), shamsi);
Line 235:
How I can change this code?
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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") %>' >
</asp:Label>
But i want to bind First column at Left hand side and second column from right hand side
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May 7, 2015
I want to pass hidden variable to javascript from href. Below is the code used
<input runat="server" id="hidOrganizationId" type="hidden" value="" />
<ul class="gloMenu">
<li id="liOrg" runat="server">
<a href="javascript: DataEncryption('../Admin/DetailPage.aspx?OrganizationId=' + hidOrganizationId)">
<b>Ordering Facility</b>
</a>
</li>
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Sep 29, 2010
Context
I'm putting together a templated, databound control. Presently it works with the following syntax...
<cc:ItemChooserControl ID="ItemChooser" runat="server">
<TitleTemplate>
<h4><%# DataBinder.Eval(Container.DataItem, "DisplayName") %></h4>
</TitleTemplate>
</cc:ItemChooserControl>
Problem
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.
Code
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;
title.DataBind();
}
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Apr 3, 2010
I am getting the following error
Databinding methods such as Eval(), XPath(), and Bind() can only be used in the context of a databound control.
but all I am trying to do is inside a ASP.NET REPEATER Control
<% if ( Eval("Message").ToString() == HttpContext.Current.Profile.UserName) %>
<% { %>
<asp:ImageButton runat="server" etc.... />
<% } %>
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Aug 11, 2010
[code]....
gives me error: Databinding methods such as Eval(), XPath(), and Bind() can only be used in the context of a databound control.
I could write : <%# Eval("SaveDate") != DBNull.Value ? do magic But I need to do lots of html magic in if statement.
I know I should add # in order to use Eval, but not sure about correct syntax.
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Apr 10, 2014
I am using ternary operator in Eval,
code is
<%# (Convert.ToInt32(Eval("Url").ToString()).Length > 0) ? "No" : "Yes" %>'
its getting an error that tags are not formed properly.
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Oct 21, 2015
<asp:Label ID="lbl_date" runat="server" Text='<%# Convert.ToDateTime(Eval("dt_pub")).ToString("dd/MM/yyyy") %>'
check for systax error
It show me server tag not well formed error
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Jun 25, 2010
I have the following:
<EditItemTemplate>
<asp:Button ID="wrqst_need_ind_btn" runat="server" Text = "Create WR"
onClientClick="javascript:popUp('popup_createWR.aspx')"
CommandArgument='<%# Eval("dvc_nm") + "|" + Eval("data_orgtn_yr") %>'/>
</EditItemTemplate>
I want to pass in as two additional params the Eval("dvc_nm") and Eval("data_orgtn_yr") to the popup function.
UPDATE:
I tried by removing the single quotes from insode the <% %> tags. Which gave me this:
onClientClick='<%# "javascript:popUp(popup_createWR.aspx," + Eval("dvc_nm") + "," + Eval("data_orgtn_yr") + ")" %>'
which complied, but when I clicked the button I did not get a pop up, the page just posted back and reloaded and said errors on page, but no popup...
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Feb 1, 2010
<asp:Button ID="btnDetail" OnClick=<%#"javascript:return Detail(DataBinder.Eval(Container.DataItem,"Description"));"%> runat="server" Text="View Detail" />
it is giving me error.
Comma, ')', or a valid expression continuation expected.
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Dec 7, 2010
I want to render something like this (with ASP.Net Controls in the codebehind):
<ul>
<li class="first"><h1>This is a caption</h1></li>
<li><a href="#" title="" target="_self">Foo</a></li>
<li><a href="#" title="" target="_self">Foo1</a></li>
<li><a href="#" title="" target="_self">Foo2</a></li>
<li><a href="#" title="" target="_self">Foo3</a></li>
<li><a href="#" title="" target="_self">Foo4</a></li>
</ul>
<ul>
<li class="first"><h1>This is a another caption</h1></li>
<li><a href="#" title="" target="_self">Foo5</a></li>
<li><a href="#" title="" target="_self">Foo6</a></li>
<li><a href="#" title="" target="_self">Foo7</a></li>
<li><a href="#" title="" target="_self">Foo8</a></li>
<li><a href="#" title="" target="_self">Foo9</a></li>
<li><a href="#" title="" target="_self">Foo10</a></li>
<li><a href="#" title="" target="_self">Foo11</a></li>
</ul>
The amount of li elements that will be rendered into each ul is determined at runtime. Each link in a li belongs to into a specific ul (the one containing a specific caption. Imagine this as a kind of a treeview with nodes and subnodes) During the bind Event I need access to an ASP:HyperLink that will be rendered into the a-element. Which databound ASP.Net control should I pick for this? Looks like a repeater in a repeater, which should make the databinding process ugly. I'm thinking about creating this HTML-Output with StringWriters myself.
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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:
<SelectParameters>
<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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Nov 30, 2010
I have a gridview with dropdown boxes. As soon as the complete gridview is databound, I want to loop through ALL the rows and set the values of the dropdown boxe in a row based on the value of another column in the same row. The gridview is databound, all data shows up. The condition "If ddl.Items(j).Value = searchstring Then" evaluates as true, but somehow the selected item in the dropdownbox is NOT changed and remains "<ignore>"
[Code]....
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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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Jun 4, 2012
I hv a grid in which autogenerate column is false.i want to check condition which is like this
<itemtemplate>
<% if <%#Eval("xy")%> is not null then%> .........error line
<b><%#Eval("xy")%></b>
else
<%#Eval("xy")%>
</itemtemplate>
But i can't find a way to bind value of xy in server tag.
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May 21, 2010
i am developing a tree view component which should be data driven and amendable instead default layout provided by .net can we change that proper hierarchial structure like organization chart is there any chance to provide with an hyperlink to redirect other page or content view control below to display the content related to it.
i am trying to use silverlight with c#.
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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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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">
<ItemTemplate>
<asp:Label ID="lblColorCode" runat="server"><%# Eval("ColorCode")%> </asp:Label>
</ItemTemplate>
<FooterTemplate>
<%# Eval("Total")%>
</FooterTemplate>
</asp:TemplateField>
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May 7, 2015
I have a SQL2012 database in the database in have a table with many cloumns one of the columns is date. on the gridview i am using a ItemTemplate field to display date
<asp:TemplateField HeaderText="DATE">
<ItemTemplate>
<asp:Label ID="Label1" runat="server" Text='<%# Eval("Date").ToString() =="2000/01/01 12:00:00 AM "? "" : Eval("Date" ,"{0:dd/MM/yyyy}").ToString() %>'></asp:Label>
</ItemTemplate>
<ItemStyle HorizontalAlign="Center" />
</asp:TemplateField>
The Problem i having is that i am testing weather the date matches something and based on that it display "" else it should display the date based on the formotting but both are not working.
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