I am trying to display a plain text in the column(contains a label) of gridview based on a condition. Here is my erroneous code. Please correct.
<asp:Label ID="lblAsgn" runat="server" Text= '<%#Eval("StatusId") == 0 ? "NEW" : "OLD" %>' > </asp:Label>
Thanks in advance.
BB
<asp:Label
ID="lblAsgn"
runat="server"
Text='<%# FormatText(Eval("StatusId")) %>' />
where FormatText could be a method in your code behind:
protected string FormatText(object o)
{
int value;
if (int.Parse(o as string, out value) && value == 0)
{
return "NEW";
}
return "OLD";
}
Try this :
<asp:Label ID="lblAsgn" runat="server" Text= '<%# Eval("StatusId").Equals(0) ? "NEW" : "OLD" %>' > </asp:Label>
Related
I'm wondering how I can use the Resources within the below Label - I'm not entirely sure.
The original line with a replacement "Yes" or "No":
<asp:Label runat="server" ID="someId" Text='<%# (Boolean.Parse(Eval("BooleanValue").ToString())) ? "Yes" : "No" %>'></asp:Label>
What I believed I could do with the resources:
<asp:Label runat="server" ID="someId" Text='<%# (Boolean.Parse(Eval("BooleanValue").ToString())) ? '<%$ Resources:language, Yes%>' : '<%$ Resources:language, No%>' %>'></asp:Label>
Any help would be appreciated, Thanks.
Okay, I got around this by declaring the variables in the code behind
protected string yes;
protected string no;
Then updating them once my page had loaded based on the culture the user set.
yes = language.ResourceManager.GetString("Yes",CultureInfo.CurrentCulture);
no = language.ResourceManager.GetString("No", CultureInfo.CurrentCulture);
Then using those in the statement
<asp:Label runat="server" ID="someId" Text='<%# (bool)Eval("BooleanValue") == false ? no.ToString() : yes.ToString() %>'></asp:Label>
i got the following code on my ASP-Site
<asp:Repeater runat="server" ID="repFoo">
<ItemTemplate>
<asp:Button runat="server" ID="btnfoo" Visible='<%#!String.IsNullOrEmpty("FOOValue")%>' />
</ItemTemplate>
</asp:Repeater>
how is the correct syntax for the String.IsNullOrEmpty method?
create a c# method--->
public string CheckIfNull(object myValue)
{
if (myValue == null)
{
return "0 value";
}
return myValue.ToString();
}
.aspx--->
... Visible = <%# CheckIfNull(Eval("FOOValue")) %> ...
there are 2 ways :
declare function in your cs file that get the value and make your checks on it:
<asp:Button runat="server" ID="btnfoo" Visible='<%# CheckNull(Eval("FOOValue")) %>' />
public bool CheckNull(object value)
{
return string.IsNullOrEmpty(value) ? fale : true;
}
OR use the function IsNullOrEmpty inline :
<asp:Button runat="server" ID="btnfoo" Visible='<%# String.IsNullOrEmpty(Eval("FOOValue").ToString()) ? false : true %>' />
I want to call a function to bind data to Repeater . Do I need to Set dataSource Property of this control or Repeater .DataBind() will work.
<asp:Repeater ID="RepeaterDays" runat="server">
<ItemTemplate>
<ul>
<asp:Label ID="lblDays" runat="server" Text='<%#ChandanIdiot()%>'></asp:Label>
</ul>
</ItemTemplate>
</asp:Repeater>
I have written RepeaterDays.Databind(), but the function is not called.
This is displaying nothing.
Is ChandanIdiot() a protected function that returns a string?
protected string ChandanIdiot() {
return "test";
}
If you want to actually do some data processing, you will have to include a parameter:
protected string ChandanIdiot(object obj) {
return "test " + obj;
}
And, assuming that there is a property called "Name" on the object that you are reapeating, you would have the following:
<asp:Label ID="lblDays" runat="server" Text='<%# ChandanIdiot(Eval("Name")) %>' />
Source:
<asp:TemplateField HeaderText="Unit Price">
<ItemTemplate>
<%# ChandanIdiot( Eval("product_unitprice"))%>
<!--product_unitprice is table colomn name -->
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="TextBox4" runat="server" ></asp:TextBox>
</EditItemTemplate>
</asp:TemplateField>
C#:
protected string ChandanIdiot(object ob) {
string typ = ob.ToString(); //selected value stored in ob
if (typ == "some function") {
//do somthing
}
return typ ; //value return to <%# ChandanIdiot( Eval("product_unitprice"))%>
}
OK I have a GridView and there is a column that I want to be a link if a file exists, otherwise I just want it to be a label. Right now I am changing the controls on RowDataBound event handler using the Row passed in the args. I am not a big fan of this as I am hard coding the column ID, and if it ever changes I will need to remember to change this code. I was hoping I could do a conditional in the asp code to add a link if a property value is not null otherwise add a label. Is this possible? Any different solutions?
I would like something like this:
<asp:TemplateField HeaderText="Status">
<ItemTemplate>
<%# if (Eval("LogFileName") == null)
<%#{
<asp:LinkButton ID="LogFileLink" runat="server" CommandArgument='<% #Eval("LogFileName") %>' CommandName="DownloadLogFile" Text='<%# Blah.NDQA.Core.Utilities.GetEnumerationDescription(typeof(Blah.NDQA.Core.BatchStatus), Eval("Status")) %>'>
<%# }
<%# else
<%#{
<asp:Label ID="LogFileLabel" runat="server"Text='<%# Blah.NDQA.Core.Utilities.GetEnumerationDescription(typeof(Blah.NDQA.Core.BatchStatus), Eval("Status")) %>'>
</asp:Label>
</ItemTemplate>
</asp:TemplateField>
You can continue to use RowDataBound event but in your aspx you add:
<asp:PlaceHolder ID="PlaceHolder1" runat="server"></asp:PlaceHolder>
In your C# code something like that:
if (LogFileName) {
LinkButton ctrl = new LinkButton();
ctrl.CommandArgument= ...;
ctrl.CommandName= ...;
} else {
Label ctrl = new Label();
ctrl.Text= ...;
}
// You have to find the PlaceHolder1
PlaceHolder1.Controls.Add(ctrl);
In this way you don't have to hard coding the column ID
I know this is a little old now but just in case someone else stumbles across this as I did when looking for an answer to a similar question, I found you can do something like this:
<ItemTemplate>
<asp:ImageButton ID="btnDownload" runat="server"
CommandName="Download"
CommandArgument='<%# Eval("Document_ID") & "," & Eval("Document_Name") %>'
ImageUrl="download.png" ToolTip='<%#"Download " & Eval("Document_Name") %>'
Visible='<%# Not(Eval("Document_ID") = -1) %>' />
</ItemTemplate>
i.e. set the Visible property to evaluate a boolean expression based on your field. If you wanted to display something instead of the download link or button, such as a "Not available" label, then you would just set its Visible property to the opposite boolean expression to your download link. (This is VB.NET not C#, but you get the idea.)
If you're going to be doing this a lot, I suggest writing your own field. The simplest approach is probably to make a NullableHyperlinkField inheriting from HyperlinkField, and render out a plain string if the anchor's URL would otherwise be null.
Use properties on the page to determine if you want to show the label or the link
<asp:GridView ID="gv" runat="server">
<Columns>
<asp:TemplateField HeaderText="Status">
<ItemTemplate>
<asp:LinkButton runat="server" Visible='<%# ShowLink %>' PostBackUrl="~/Aliases.aspx" >This is the link</asp:LinkButton>
<asp:Label runat="server" Visible='<%# ShowLabel %>'>Aliases label</asp:Label>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
The add the properties ShowLink and ShowLable toyour code behind
public bool ShowLabel
{
get
{
//determine if the label should be shown
return false;
}
private set
{
//do nothing
}
}
public bool ShowLink
{
get
{
//determine if the link should be shown
return true;
}
private set
{
//do nothing
}
}
I have a gridview containing some data from db, and after a check I want to see a small cross/tick image in each row, due to the result of the check.How can I change the image url dynamically?
You could either use inline statement like
<%#Eval("check").ToString() == "1" ? "images/checked.gif" : "images/unchceked.gif")%>
or use a function to get the result as follows:
<%# getImageUrl(Eval("value")) %>
Public Function getImageUrl(ByVal value As Integer) As String
If value = 0 Then
Return "images/unchceked.gif"
Else
Return "mages/checked.gif"
End If
End Function
<Columns>
<asp:TemplateField>
<ItemTemplate>
<asp:Image ID="check" runat="server" ImageUrl='<%#If(Eval("check") = 1,"images/checked.gif","images/unchceked.gif") %>' />
</ItemTemplate>
</asp:TemplateField>
</Columns>
in form:
<Columns>
<asp:TemplateField>
<ItemTemplate>
<asp:ImageButton ID="check" runat="server" ImageUrl='<%# GetImageUrl(Eval("Check")) %>' />
</ItemTemplate>
</asp:TemplateField>
</Columns>
code-behind:
public string GetImageUrl(object checkObject)
{
if (checkObject!= null)
{
bool check;
bool parsable = bool.Parse(checkObject.ToString(), out check);
check= parsable ? check : false;
return check ? "~/Media/Images/tick.png" : "~/Media/Images/untick.png";
}
return "~/Media/Images/none.png";
}