Re: ASP.net code to place one Image on another image - ASP.NET Discussion Boards

DataGrid - Get the value of invisible cell

alvarog012-Mar-09 9:01

2-Mar-09 9:01

Hi all,

i need to get the text of a cell in a datagrid control, whose column Visible property is set to false (i dont want to display that column to the user: just contains a code number and eats space on the screen). This datagrid is data bounded to a ObjectDataSource control.

i try the following without success:

GridView_1.SelectedRow.Cells[0].Text

(on debug, i see the property Text as "")

is there a workaround to get the selected cell value without turning column's Visible property to true?

Thanks in advance.

Re: DataGrid - Get the value of invisible cell [modified]

Yusuf2-Mar-09 11:23

Yusuf

2-Mar-09 11:23

if you set Visible property of the column to false, that column will not rendered. That is why you getting String.Empty when you query the cell value.

The work around is to use css to hide the column from the user. Now you can access the cell value the same way as you access the visible=true columns.

First define your css, example

<style type="text/css">
    .columnHidden
    {
        display:none;
    }
    .columnVisible
    {
        display:block;
    }
</style>

Now use the css to hide your columns

<asp:boundfield datafield="PID" itemstyle-cssclass="columnHidden" />

Yusuf

modified on Monday, March 2, 2009 6:13 PM

Re: DataGrid - Get the value of invisible cell

alvarog012-Mar-09 21:27

alvarog01

2-Mar-09 21:27

Hi Yusuf,

thanks a lot, very well explained.

User.IsInRole("<somegroup>") returning false????</somegroup>

pnslcs2-Mar-09 7:32

pnslcs

2-Mar-09 7:32

Howdy,

I have had a web site running for some time now and I am constantly having issues with the statement User.IsInRole ("somegroup") returning a false value. It does not always happen but often the user is a memeber of the group which membership is being tested but the statement returns false. The application makes decisions based upon the return value and then the user does not have proper access to certain functionality within the site.

We normally have to stop and start the application pool on the iis server. Is there anything I am doing wrong?

thanks

Patrick

check date change

suni_dotnet2-Mar-09 5:00

suni_dotnet

2-Mar-09 5:00

Hi,
I need to check the date changed, if changed i need to execute a snippet for first request after date change and for further requests another snippet executes.
How do i check the date is changed? and execute snippet for first request only?
Thanks in advance.

Re: check date change

Yusuf2-Mar-09 7:54

Yusuf

2-Mar-09 7:54

Look at Validation[^]
you can run your validation on the client side too. If you are looking only date changed events then look at this[^]

Yusuf

ASP.net code to place one Image on another image

Malleswar12342-Mar-09 4:34

Malleswar1234

2-Mar-09 4:34

Hi Friends,

I am looking for the C# code to place one image on another image. My requirement is exactly like the following link.

http://photofunia.com/

When user browse and select his image, it has to be adjusted on another image. Please provide me if you have any sample code or if you know any third party controls and codes which provide these kind of functionality.

Thanks in Advance

Regards,
Malleswar

Re: ASP.net code to place one Image on another image

Brian W King2-Mar-09 9:19

Brian W King

2-Mar-09 9:19

There is not a piece of code that does this. Perhaps there is a third party that makes it simple, but its pretty simple to do it from scratch without any extra controls.

Its actually a combination of 'photoshop' techniques and code. You do actually have to layer two photos on top of one another however in a rendered code page. You use the standard DIV tags and then layer them via the absolute positioning, setting the z-index of two tags to force one behind the other. The top most photo needs to be a GIF that has the sections 'cut out' and made transparent where you want the underlying photo to 'show through'. You will need a tool like Photoshop to accomplish this part (and its really the hardest part of it all). Its an old, and simple technique.

Re: ASP.net code to place one Image on another image

Malleswar12349-Mar-09 3:22

Malleswar1234

9-Mar-09 3:22

Thank you for the reply.

Please provide me some links where I can get sample codes or third party tools for this.

How the URL Mapping work in ASP.NET 3.5 ?

King Shez2-Mar-09 4:10

King Shez

2-Mar-09 4:10

hi

Can any one let me know, i am using URL mapping in ASP.NET 3.5 i have made the following enteries in my web.config

<urlmappings enabled="true">
<add url="~/Widget/aspx" mappedurl="~/Products/W/Widgets.aspx">

but when the user is typing the URL it is showing 404 error? i am using IIS 5.1 on Windows XP. Kindly reply ASAP, thanks in adavance.

regards,

Re: How the URL Mapping work in ASP.NET 3.5 ?

Abhishek Sur2-Mar-09 4:19

Abhishek Sur

2-Mar-09 4:19

dont know what you are writing in Web config

<urlmappings enabled="true">
<add url="~/News.aspx" mappedurl="~/UrlMappingVB.aspx?category=news" />
</urlmappings>

Abhishek Sur

My Latest Articles
Basics on LINQ and Lambda Expressions

Create .NET Templates

Re: How the URL Mapping work in ASP.NET 3.5 ?

King Shez2-Mar-09 20:11

King Shez

2-Mar-09 20:11

Thanks for the reply i want to do URL Mapping this has been provided in ASP.NET 2.0, for which i have to add the tags in Web.config, but it's noy working for me.

Re: How the URL Mapping work in ASP.NET 3.5 ?

Abhishek Sur3-Mar-09 20:29

Abhishek Sur

3-Mar-09 20:29

let me know what exactly the problem that it gives.

Is it from the development environment, or in published version. Confused | :confused:

Abhishek Sur

My Latest Articles
Basics on LINQ and Lambda Expressions

Create .NET Templates

JavaScript for validating input value to the gridview

Reddy19832-Mar-09 3:17

Reddy1983

2-Mar-09 3:17

Can any body write Solution for validating input textboxes in Gridview

I need to validate for value shouldn't blank and must be numeric.

Re: JavaScript for validating input value to the gridview

Abhishek Sur2-Mar-09 3:31

Abhishek Sur

2-Mar-09 3:31

function checkBlank(id)
{
 var element = document.getElementById(id);
 return element.value.length > 0;
}

Call this function in the OnBlur Event of the textboxes like this :
onblur = return checkBlank(<% this.txtbox.clientId %>);

Abhishek Sur

Barcharts

member272-Mar-09 2:57

member27

2-Mar-09 2:57

Hi all,

I want to use barchart and graphs in crystal reports..how to give x axis and yaxis value in them..i saw in data tab ..

on the change of and show values textboxes in tat tab..i cant undstand

suppose from my dataset i want to give x axis as branch name and amount in y axis??

how to give them

pls help me Frown | :(

Re: Barcharts

Abhishek Sur2-Mar-09 3:03

Abhishek Sur

2-Mar-09 3:03

just drag and drop the field you want in the chirt data axis... Rose | [Rose]

Abhishek Sur

Re: Barcharts

member272-Mar-09 21:30

member27

2-Mar-09 21:30

I know to drag the fields..I asked there is option in data tab tat count of field is displaying.
I kept date in x axis..but thre is no option to keep n y axis..it is taking the count of field in dataset...

Abandoning Session not logging out

Tristan Rhodes2-Mar-09 2:40

Tristan Rhodes

2-Mar-09 2:40

Hi Guys,

I've got a section on a master page that is visible when logged in. It contains a link to click to log out, which runs the following code

Session.Abandon();
Response.Redirect("~/default.aspx");

However, on the default page, the Logged in section is still visible with the log out button, and i can still access the secure areas without authorization. (Code behind still hit, so it's not cached).

What else do i have to do to get someone completely logged out? :S

Regards

Tris

-------------------------------

Carrier Bags - 21st Century Tumbleweed.

Re: Abandoning Session not logging out

Abhishek Sur2-Mar-09 2:53

Abhishek Sur

2-Mar-09 2:53

it is better to use Session.Remove("AuthKey") and check the "AuthKey" from Master page..

sometimes Session.Abandon fails to clear current session variables completely. Rose | [Rose]

Abhishek Sur

ASP.NET Problem with IO.Directory.GetFiles

Larvex2-Mar-09 2:23

Larvex

2-Mar-09 2:23

Hi all,

I have a problem with that instruction: For Each f In IO.Directory.GetFiles(sDir)

sDir = "R:\Temp" for example.

When I use that on a local directory on the C:\ driva it works ok, but when I try to use that on the network with a mapped drive (example: R:\Temp) I get the error: System.IO.DirectoryNotFoundException: Could not find a part of the path R:\Temp

Can you help me?

Thanks!!!!

Re: ASP.NET Problem with IO.Directory.GetFiles

Abhishek Sur2-Mar-09 2:54

Abhishek Sur

2-Mar-09 2:54

use complete UNC path rather than your map drive path. IT will solve the problem Rose | [Rose]

Abhishek Sur

Re: ASP.NET Problem with IO.Directory.GetFiles

Larvex2-Mar-09 3:40

Larvex

2-Mar-09 3:40

When I use the complete UNC (for example: \\MyServer\Data\xxx\ ) I have a new problem: System.IO.IOException: Logon failure: unknown user name or bad password.

Is there any other way of listing the files on a network drive?

Re: ASP.NET Problem with IO.Directory.GetFiles

Larvex2-Mar-09 4:57

Larvex

2-Mar-09 4:57

Finally I solved the logon problem with those lines of code in the web.config

<authentication mode="Windows">

<identity impersonate="true">

It works ok with thw complete UNC.

Thanks for your help!!

Re: ASP.NET Problem with IO.Directory.GetFiles

pnslcs2-Mar-09 9:24

pnslcs

2-Mar-09 9:24

Can you explain your solution with a bit more detail about the changes to the web.config?

Thanks,

Patrick

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