I'm trying to do the following for asp.net combobox:
Text='<%# IIf(Eval("Name").ToString().Equals(""), Bind("Other"), Bind("Name") %>'
What I'm trying to do is if the "Name" column is empty then bind to "Other" column, otherwise bind to "Name" column. Anyone know the right syntax, keep getting object not set to reference. I'm doing this in VB.Net.
I have the following object:
CrossTabDataObject
{
string RowName{get;set;};
int RowId{get;set;}
List<string> CellContents = new List <string>();
//Constructor..... etc.
}
I'm building a dynamic crosstab grid using GridView in asp.net 3.5
I wish to bind to CellContents[0] for dynamic column 1, CellContents[1] for dynamic column 2 (dynamic column 0 is the RowName field from the CrossTabDataObject) etc. I am using:
object boundValueObj = null;
Control ctrl = (Control)sender;
IDataItemContainer dataItemContainer = (IDataItemContainer)ctrl.NamingContainer;
boundValueObj = DataBinder.Eval(dataItemContainer.DataItem, strSelectedID);
This code is in the InstantiateIn function of the gridview as I'm creating drop down list templates in each cell of the crosstab.
I have code (not shown) that sets strSelectedID depending on the column being created.
When strSelectedID is equal to "RowName" for dynamic column [0] the DataBinder.Eval function works fine and sets boundValueObj as expected. The problem comes when strSelectedID is set to "CellContents[n]" where n is the Column Index.
DataBinder.Eval only works with properties and fields of objects. How do I get around this?
I have a label in a gridview where the text is set to <%Bind("lname")%> . I want to make it say thiis <%Bind("lname" + "fname")%>. I've been having a hard time making .net do this. I also want to add a "," or some other unrelated caracter?
View 2 RepliesI am using Eval inside a datalist to populate a hyperlink within the datalist with a navigateURL value and I am using it as follows:
<asp:HyperLink ID="HyperLink_FullStory" runat="server" Text="Full Story" NavigateUrl='<%#Eval("LinkAddress")%>'></asp:HyperLink>
The issue I am facing is that the current page URL is getting appended to the 'LinkAddress'(the URL being fetched from the database) and thus,the final URL formed is not a valid one.Can someone suggest how do I remove the current page URL? Is there any way it can be done without writing code in the code behind page?
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"));
I have a listview control on an .aspx page. Inside this list view i want to check "Type" property which comes from database. here is the example code :
[code]...
As a last resort i tried to user DataBinder.Eval() but i get the exception "Expected class, delegate, enum, interface, or struct". What can i be doing wrong? Writing a function in code-behind isn't an option for me.
Can you do something like :
<%# DataBinder.Eval(Container.DataItem,"Column1").ToString().Replace("_",<%# DataBinder.Eval(Container.DataItem,"Column2") %> %>
Can a DataBinder.Eval be nested within another DataBinder.Eval?
What's the difference between binding for example a column called ("Name") in both cases ? and is there's any performance difference ?1- Assigning the data in the mark-up
<asp:Label ID="Name_Lbl" runat="server" Text='<%# Eval("Name") %>' ></asp:Label>
2- defining a control object for every control inside the repeater ItemTemplate and find it and then assign the data in the column "Name" to ite.Item.FindControl("Name_Lbl")
May I know what is the diffrence between static binding and dynamic binding and which binding is used in
1)Virtual Functions
2)Abstract Class
3)Function Overloading
4)Operator Overloading
5)Fuction Overriding
6)Delegates
i have small problem with my code in vb.net that i want to use (Eval) in my project
so i write this code :
<asp:Label ID="Label1" runat="server"
Text='<%#Eval("PAG_PAGES") == null ? "" : ((PostAgenciesModel.PAG_PAGES)(Eval("PAG_PAGES"))).PAGE_TITLE_AR %>' />
and this code i used in my C# project .... all want to show the (Label1) in inside my GridView....
("PAG_PAGES") is the name of table..
PostAgenciesModel is the edmx...
PAGE_TITLE_AR is the colum in ("PAG_PAGES") that i want to show it
I have such code:
<%# (int)Eval("Favorites") > 0 ? "<a href="history.aspx?visitorid=<%# Eval("VisitorID") %">Favorites</a> / " : ""%>
where I show a link if value>0 .. However it gives me a bad url(history.aspx?visitorid=%3C%#%20Eval) when I put visitorID=<%#...%>inside another Eval<%#..%>
if you have two table inner join like SELECT* From A INNER JOIN B on A.ID = B.IDSay A and B tables both have Username values but A's username is Test, and B's username is Test2When I do Eval("Username") it always print out "Test", how can I configure it to print out "Test2"... meaning how to specify which table's value to put using eval.. is there something like Eval(B.("Username"))??
View 6 RepliesWhat I am trying to achieve is to use an Eval as parameter in my anchor tag's href. The anchor is nested inside a repeater, why I cannot use the code behind to achieve this.
I have tried a few things without any luck.
<a href="http://MyWebsite/ActiveUsers?ID=InsertEvalHere"><%# Eval("Name")%></a>
The following code below is what I have tried to do:
<a href="<% "http://MyWebsite/ActiveUsers?ID=" + DataBinder.Eval(Container.DataItem("ID"))%>"><%# Eval("Name")%></a>
<a href="<% "http://MyWebsite/ActiveUsers?ID=" + Eval("ID")%>"><%# Eval("Name")%></a>
<a href="http://MyWebsite/ActiveUsers?ID=<% DataBinder.Eval(Container.DataItem("ID"))%>"><%# Eval("Name")%></a>
<a href="http://MyWebsite/ActiveUsers?ID=<%# Eval("ID")%>"><%# Eval("Name")%></a>
None of the above seemed to be right, as I keep getting this error - The tag is not well formed.
How should I handle this?
I am trying to Navigate URL in this way
<asp:HyperLink runat="server" NavigateUrl='javascript:NavigateUrl("<%#Eval("TicketID")%>","<%=RedirectURL %>");'><%# Eval("TicketID") %></asp:HyperLink>
but an error occurred in the javascript Error Console in Mozilla browser. Error: missing ) after argument list Source File: javascript:NavigateUrl("<%#Eval("TicketID")%>","<%=RedirectURL%20%>");
Line: 1, Column: 22
Source Code: NavigateUrl("<%#Eval("TicketID")%>","<%=RedirectURL %>");
I want to remove the error. but functionality is ok.
Can I use variable in eval in repeater? Or how can I use it?
For example:
<%# DataBinder.Eval(Container.DataItem, lngHome) %>
Code behind in form load:
[code]....
I have 2 fields in database table: eng_detail and tr_detail
So how can I use like this <%# DataBinder.Eval(Container.DataItem, lngHome) %>?
I have a dropdownlist that gets data through entity objects, but with a navigation. But I get an error trying to do this.
<asp:DropDownList ID="ddlVacancy" DataValueField="ID" DataTextField='<%# Eval("Position.Name") %>'
runat="server" Width="200px"/>
When creating a website using Asp.Net and using controls such as the ListView is it good practice to use the "Eval" command or should there be a literal and the data populated in the databind event?
View 2 RepliesI want to print series in one cell of gridview sccording to condtiotion. I have used condition from ternary operator like
<%# Eval("Sequence").ToString()=="R" ? "Sequence1" : "Sequence2" %>
but i want to print series instead of string Sequence1 and Sequence2 by loop.
in ASPX, I set EVAL value on linkbutton,
<asp:LinkButton ID="LinkButton1" runat="server" Text='Show'
OnClientClick='myalerts(<%#Eval("RowId")%>);' />
but html code is:
<a onclick="myalerts(<%#Eval("RowId")%>);" id="LinkButton1">
how to correct set EVAL value on linkbutton,
ex：<a onclick="myalerts(1);" id="LinkButton1">
Why doesnt this work:
Code:
<asp:Label ID="lblName" runat="server" Text='<%# Eval("Title")%> <%# Eval("Forename")%> <%# Eval("Surname")%>' ></asp:Label>
And what is the best way to achive this?
I want to know where lies the difference between these two.I had a google search on this topic and a lots of replies and each of them tell the same thing:
Eval means one way binding(i.e;readonly)
Bind means two way binding(i.e;both read as well as write the datasource)
but none of them explained it more clearly.all i want to know is how can i use the Bind to update/insert something from the datasource?
How to make inline eval if control ?
[code]....
I've a asp.net linkbutton inside asp.net repeater control which renders multiple link buttons. I want to set the style of each and every linkbutton dynamically.
I'm trying
style="color:#6D7B8D;font-size:<%# DataBinder.Eval(Container.DataItem, "Title")%>;"
But i'm getting "The server tag is not well formed" error.
I have a SQLDataSource that is bound to a ListView control but I want to place parts of the bound record into the HTML TITLE attribute. Here is my codebehind file that I want to change so it can use Eval to construct a dynamic TITLE based on the data content:
[Code]....
I am working on my first project with the Entity Framework and am having some difficulty displaying advanced information with the EntityDataSource and a ListView.
For example, given the two entities:
Item
Name
Price
Order
Number
Items <---- Navigation Property to Items contained in the Order
I want to display a list of all orders with a column with the total number of items in the order and a column with the sum of the prices of all items in the order.
I am using an EntityDataSource configured as follows:
<asp:EntityDataSource ID="eds" runat="server" ConnectionString="name=NDSEntities"
DefaultContainerName="NDSEntities" EnableFlattening="False" Include="Items"
EntitySetName="Orders"></asp:EntityDataSource>
In the ItemTemplate of the ListView, I can write the order number as follows:
<%# Eval("Number") %>
I had trouble figuring out how to display a count of items in the order. I tried using Items.Count() function in select statement in the EntityDataSource but that didn't work. Eventually I figured out I could do the following in my ItemTemplate:
<%# Eval("Items").Count() %>
Now I am stuck trying to get the sum of the items. I am stuck here. I have tried using
<%# Eval("Items").Sum(Function(i) i.Price)%>
but I get the following error:
Public member 'Sum' on type 'EntityCollection(Of Item)' not found.
This confuses me because I know that Sum is a method of EntityCollection(Of ).
My two questions are as follows:
Am I getting the item count correctly?
How should I go about getting the sum of the prices of the items?