Web Forms :: Controls In MasterPage Lose Their Value?

Oct 11, 2010

I've declared some properties in MasterPage

[Code]....

and I'm gonna set their value through other web forms

[Code]....

but the problem is when I navigate to another page, the content of MasterPage is lost

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C# - Cells In Gridview Lose Controls On RowUpdating Event?

Jan 6, 2010

I'm using a GridView to display some columns and rows that reside in a database. This works excellent. Because i wanted to add columns dynamically out of a List of names. Let's say we have a list with 5 names in it, then it dynamically creates a column for every name in the GridView.

Here's some code to display what i do:

protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
//Create columns for each student
List<Student> allStudents = new Eetlijst.Business.Students().GetAll();
allStudents.Reverse();.......

How do i create the dynamic columns for each row? I create them with a DataBound event. So when the GridView databinds, the columns get filled with data. There is also a check inside to see if the row is in edit mode or not. So when i click on the edit button next to the row, the row goes perfectly in edit mode. The code i made adds a TextBox control to the cell.

When i fill in a value and press the Update button, it can't find any controls anymore and therefore i can't get the value i entered. The control is still there in the DataBound when i put a break point after it. But as soon as i click the Update button, all the controls of the cells are gone.

I searched on the internet and all i found is that it has something to do with the application firing a postback before it reaches the RowUpdating method.

So, how can i let the controls exist that i added to the cell when it is in edit mode?

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[Code]....

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I have a Wizard server control to collect data and send it as an Email in the last step the problem i think that the page post back and clear the fields:

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Feb 4, 2010

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May 3, 2010

I have 2 masterpages. (Default.master and User.master).I have a hidden field in Default.master then how can i get the hidden field value of Default.master file from User.master.is there any way to access that hidden field like: Request.form("hidID") ?

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Mar 8, 2011

We have a problem on a new server where disabling a themed button loses its theme. This happens consistently on all buttons now.

We just switched to a new iis server 7.5 using asp.net framework 4.0

Before, the buttons through out the website have a nice style/theme. These are not set inside each button and there are no classes set specifically for buttons I dont think but I believe inherit the theme from I believe the web.config in either:

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why when I create a checkbox using HTML.CheckboxFor the values remain after postback where as if I just create a simple HTML checkbox in HTML after postback the value is no longer there?

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Oct 7, 2010

On an ASP.NET page with a tabstrip, I'm using the hash code in the URL to keep track of what tab I'm on (using the BBQ jQuery plugin). For example:

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Unfortunately, I've just realized that there are a couple of places on the page where I'm using an old-fashioned ASP.NET postback to do stuff, and when the postback is complete, the hash is gone:

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... so I'm whisked away to a different tab. No good.

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Is there a way to tell ASP.NET to keep the hash in the URL following a postback?

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Causes String To Lose Decimal Place?

Sep 7, 2010

Just to be forward, my .net and c# expierence is very limited, that one could say I'm a complete noob :) However I do have some grasp on OOP as I usually work in PHP (FWIW). My problem seems to be with this line:

Session["total"] = dt.Compute("SUM(price)", "").ToString();

which will output a total of say "9.2" where as the price is "9.20" from a few record lines as such:

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The label that displays the total sum is:

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From what I've gathered, I'm suffering from some kind of type casting problem? Hopefully I haven't missed anything, its a bit difficult to show all the code but hopefully someone can point me in the right direction? Question is; how can I get an extra decimal place to show up on my sum (or why is it dropping the last decimal place?).

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ThreadStatic Member Lose Value On Every Page Load?

Aug 20, 2010

[ThreadStatic]

private static BackgroundProcessManager2 _Instance;

public static BackgroundProcessManager2 Instance
{
get
{
if (_Instance == null) // **
{
_Instance = new BackgroundProcessManager2();
}
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And ussually everything is fine, but this time on every page load _Instance is null.

Additionally, i have very strange error when trying to watch _Instance in line marked **:

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What can couse this class to upload?

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Ok I have this object.ascx. Everythings works fine in an Add scenario (model is null). However when the model isn't null I have metadata for the property in object.ascx then when I call Html.Editor(prop.PropertyName) I have a default instance of modelmetadata within that template. About the only value that is preserved is propertyname. My AdditionalValues are gone, IsRequired, Watermark etc all have default values. I'm seeing bizarro state driven behaviour like this all over the place when it comes to templates. It is peeving me.

[Code]....

So my question is: Why does having a non-null model cause a completely unexpected (and stupid) behaviour? I find it hard to believe this is intended.

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Web Forms :: Get Controls From MasterPage?

Oct 25, 2010

Control myControl = ( Control) Master.FindControl ( "controlID" );

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so, how could I get controls from the master page?

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grdEmpty.Columns.Add(bfield)

but when enter some value in text box in this template field i lose value on postback. And also on postback I lose all template field and i must re-create this grid.

My goal is: I have button and i want to add new row in this grid, but i want to have old value also.

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Oct 23, 2010

When we disabled the viewstate in gridview its lose value but this case not true with Textbox control why?

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I have 2 pages, page 1 will download page 2, using the following code:

Page 1 code:

System.Net.WebClient webClient = new System.Net.WebClient();
byte[] buffer = webClient.DownloadData("http://www.mywebsite.co.uk/page2.aspx");
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I have a web page with several databound (via their property's) user controls in a multiview in a formview.

I decided to try Ajax (Adding ScriptManager, updatepanel etc).

All works fine except for the user controls.

The controls I use to contain the usercontrol property values ((invisible) Textboxes or Hidden fields) lose their value when i change from ond multiview panel to another. (In other words: usercontrols on invisible multiview panels lose their property value's). (When I change a multiviewpanel all the property fields turn emty, when i hit the update button of the formview afterwards the emty values are propagated to the database. (resulting in loss of data)) Textbox seems to hold its value, hiddenfield loses its value (when changing from one multiview panel to another).

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[code]....


This is fine in the beginning but once the user selects 'save' and the code:

[code]....

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Apr 22, 2010

I have an external javascript file which I include to my page on the code behind (as seen below).

My problem is, when I my page makes a postback (not partial one), I check the loaded scripts by using FireBug, and I cannot see the javascript file in the list after the post back. I asusmed once it is included to page on the first load, browser will be caching it so that I do not need to re-include it.

What am I doing wrong?

[code]...

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[Code]....

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My web application was in .NET framework 1.1 initially. It has a few ASP server grids and some third party controls (Infragistics). I had it migrated to .NET framework 3.0.

Now I've added a few ASP server grids('GridView'). The thing is when the session('InProc') ends after 20 mins, the rows of the newly added grids disappear. However, this is not happening with the grids that were present already pre-migration. I am not using any session variables to initialise or bind the new grids.

This is happening only if the controls are added in the web forms that were involved in the framework migration process. If the control is added in the new web form, then this issue's not occuring.

Also I am not allowed to change the session state to any other. It has to remain 'InProc'. Continuing the session indefinitely is also not an option.

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I set a session at login and I lose it after about 3 button clicks. I don't know why. The following is what I have in my webconfig:

<sessionState
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