C# - .net Dynamic Controls Not Being Built When Expected?
Jun 22, 2010
I have a reporting module (C# asp.net) that uses dynamic controls to represent the varying parameters of the selected reports.The dynamic controls build and display fine (XML stored in SQL Server 2008 and XSLT for the transform into HTML).My problem is that I have a drop down list(not dynamically created) that contains the report names as text and the report id's as the value. This DDL posts back when its selected index changes. When the DDL posts back, a session and viewstate variable containing the selected report id is populated. I want to read this variable and use it to generate the dynamic parameter controls.
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Jun 18, 2010
I have this problem of handling postback for controls built dynamically.
I am having something like this:
[code]....
Now, whenever it posts back, the control disappeared. If I remove the !IsPostback, then it will always create the control.
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Mar 24, 2010
I'm running into a weird issue that I can't find an answer for anywhere I've looked (and I've looked a ton).I built a web deployment project with Visual Studio 2008 Team System on my old Win XP machine. This has always worked flawlessly and installed everywhere. I can also copy this MSI to my new Windows 7 Ultimate machine and it again installs just fine.
HOWEVER, when I rebuild that exact same web deployment project on my new Win7 machine, also using VS2008, the MSI will build OK, but when I then run it to install my software I get a dialog box telling me "the installer was interrupted." Interestingly, when I built this MSI in my new environment one additional warning popped up during the build process, which was "Unable to copy the schema file '(null)'"After many searches and reading different web pages, I know this has to do with these two registry keys:
[HKEY_LOCAL_MACHINESOFTWAREMicrosoftVisualStudio9.0DeploymentSchema]
"DefaultMSISchemaFile"="c:\Program Files\Microsoft Visual Studio 9.0\Common7\Tools\Deployment\Vspkgs\..\VsdSchema\Schema.msi"
"DefaultMSMSchemaFile"="c:\Program Files\Microsoft Visual Studio 9.0\Common7\Tools\Deployment\Vspkgs\..\VsdSchema\Schema.msm"
Yet, everything checks out. All permissions are correctly configured, etc., etc.Then, when I enable the built-in administrator account and log in as that, and then rebuild this same web deployment MSI the "Unable to copy the schema file '(null)'" warning no longer appears. Then when I log back out, log back in as myself and then run this newly built MSI it installs fine, just like the original one that was built on XP.I also tried uninstalling VS2008 and re-installing it as the super user, but that also didn't change anything. And yes, I did also configure devenv.exe to run as administrator.
Has anybody seen this? Or is it a requirement that you can only compile deployment projects as the super user? That cannot be right.I've been thrashing for more than five days and for the life of me cannot figure this out. Of course, I can run as the super user when developing, but I thought the new security model in Win7 was designed exactly so you don't have to.
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Aug 3, 2010
Looking for some ideas to add some custom built forms within our application where admin users can create forms (text boxes, multi choice) etc and allows users to fill them out possibly through a routing system. I know infopath can do this any other ideas? If software already exists where we could integrate into the system that would be great.
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Feb 6, 2010
Is it possible to use JavaScript passed by Ajax on the client-side? I am getting an "object expected" error from an onClick event from a HTML control that is passed with the JS. The controls and JS work when the page is rendered on the server.
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Apr 21, 2010
What am I missing here?I get the error Declaration Expected @ myPostData=
[Code]....
Dim encoding As New ASCIIEncoding()
Dim RateXML
As
String =
"123"
'Format the Data
Dim myPostData
As
Byte()
myPostData = encoding.GetBytes(RateXML)
^^^^^^^
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Mar 8, 2011
[URL]
i m not able to download the
Built-in Charting Controls (VS 2010 and .NET 4 Series)
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Jan 24, 2011
I'm developing an Web Application (C#) on a Windows 7 Enterprise (x64), with Office 2007 using Visual Web Developper 2010 Express. On that project that reads information from Excel files like so:
protected void Page_Load(object sender, EventArgs e)
{
string connString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:1.xlsx;Extended Properties="Excel
[code]...
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Jan 5, 2010
I am planning to write a custom 'password reset control' that allows an Administrator to reset the user's password, while using the ASP.NET built-in 'login' and 'create new user' controls. For this reason, I will need the hashing algorithm (hopefully I can call some .NET class and method) to perform this.
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Mar 22, 2010
reading on the forums about assigning event handlers to controls that are dynamically created via code and am just not getting anywhere.In my particular case, I'm rolling through a directory of images and creating ImageButton controls on the fly and want to assign the OnCommand event to a single handler.Then, by using the CommandName (which is different for each control) I can figure out which ImageButton was clicked and act accordingly.
The snippet below (which can be found in many posts on this topic) is inside a foreach which loops through the directory and gets each FileInfo (fi).Each is then added to a PlaceHolder (phImages).
[Code]...
This code compiles and runs but the event handler is never invoked when an ImageButton is clicked. I believe this is because you cannot, without some coding I'm not familiar enough to do yet, assign a handler to multiple controls.I say this because I ran into a similar problem in a Silverlight app I wrote and had to use a lambda (=>) operator to do something similar (although I admit to not knowing enough about this to know if this situation is the same).
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Jan 6, 2010
I have a form that gets populated by LINQ and I want to be able to update the database using that same form. The form is populated by grabbing a querystring (for example, "edit=10") and searching the primary key for that record. So far so good. I have a button attached to the function below which is supposed to use LINQ to update the database with data from the form. I get no errors, but for some reason, it is only updating one field (Last_Updated) instead of all of them.
[Code]....
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Apr 11, 2010
I am getting an Identifier expected error under the closing tag of this expression but the code seems to be ok.
[Code]....
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Jan 8, 2010
I have a Gridview that I am trying to add Paging to, however when the 2nd page is selected I get my EmptyDataText.n reviewing multiple sites and forums they have stated to send your Datatable to a Session - What am I missing here?
[Code]....
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May 17, 2010
Im pretty new to ASP.net but am getting there slowly but surely! Its definitely growing on me.
The problem im looking at at the moment is i have a gridview displaying data from my SQL database, which works fine. I have enabled the selection option on the gridview which has placed a select link next to each row. Perfect.
What I am looking to do is be able to click the select button, and have the details from each column on that row go into variables when the page is posted back. I will then write these back to a different table in the database later on.
I see that when i click the link it is posting back the number of the row i have selected, but how do i use this to get the data from each column out of the gridview?
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Oct 28, 2010
I have the following on my aspx page
[Code]....
Then in my code behind i have the following set up in 4+ button events, since each button serves a different purpose.. Prior to this past week, i was only working with 2 gridviews on the page.. that were linked to this datasource.. so everything was fine.. but recently had to add a Datalist to display the results a certain way.. I got it all working, but now that more records are in the table the datalist is growing in length on the page and cant figure out how to modify the current code to enable paging without having to redesign the logic all together to get it enabled.
Based on what i have below and above, is there a solution i can implement to implement paging ONLY for the Datalist? Or if it cant be specific, if enabled, will it affect the gridview that is already configured to enable paging, which already works?
[Code]....
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Apr 26, 2010
know in asp.net 1.0 the grid display controls would pull all the data in, and then provide paging but the paging was done in memory.Are there any smarter controls that provide paging where they only pull the data relevent to current page being displayed?ie. select 10 rows for the current page, instead of doing a select of ALL the rows in the table.
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Jan 6, 2010
I would prefer that all middle tier methods that are used by GridViews be in the form that allows them to be used by ObjectDataSources...
<DataObjectMethod(DataObjectMethodType.Delete)> _
However, I am working on a project that I did not create. So, I was wondering if there is a way to use all the cool built-in editing functionality of a GridView without setting a DataSource? In other words, I am binding the datasource in the code behind (this works), and I have the following in my GridView...
<asp:CommandField ShowEditButton="True"></asp:CommandField>
And in the RowUpdating event (after the update button is clicked), I would like to call a stored proc to update a table and then use this kludge to get the GridView out of "edit" mode...
e.Cancel = True
grdWeeklyTime.EditIndex = -1
grdWeeklyTime.DataBind()
Is this possible or do I absolutely need to specify a DataSource in the GridView dropdown in design mode and then check the Enable Editing checkbox?
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Sep 7, 2010
i am building my objectdatasource dynmically when certain buttons are clicked on the page.. and with that the gridview is being displayed with the results of the objectdatasource that was built.
So my gridview code looks like this:
[Code]....
How can i enable sorting and paging if the datasource is being built on button click event?
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Aug 10, 2010
I have a dynamic Table which contain 8 rows and 8 Colums
Table t = new Table();
TableRow rr = new TableRow();
TableCell cc = new TableCell();
and in the each Cell CC I add a dynamic Button(Or Linkbtn)
LinkButton LB1 = new LinkButton();
LB1.Text = "AM";
LB1.ID ="Link1";
cc.Controls.Add(LB1);
rr.Cells.Add(cc);
LB1.Click += new EventHandler(LB1_Click);
t.Rows.Add(rr);
i have a table with 8 rows , 8 colums and each cell contain a LinkButton (which diffrent in IDs) I want to add Lable in the same cell of this LinkBtn(LB1) which it clicked but I cann't What shoud I write here?
void LB1_Click(object sender, EventArgs e)
{
// throw new NotImplementedException();
}
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Dec 11, 2013
I have a Webform with a TextBox (Static) and 3 TextBox (Dynamic - based on the following article: [URL].... )
How to use this scenario with a single GridView table?
Based on the User input, the GridView might have (1 + 3) columns; (1 + 6) columns; (1 + 9) columns; ...etc.
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Jul 24, 2013
im creating dynamic buttons on page load and on the click event of button1 handlere iam creating more buttons this is going fine but on click event of button 2 work is not done so how to maintain a chain of creation of button on click events
protected void Button2_Click(object sender, EventArgs e)//
{
ClientScript.RegisterClientScriptBlock(this.GetType(), ((Button)sender).ID, "<script>alert('Button_Click');</script>");
Response.Write(DateTime.Now.ToString() + ": " + ((Button)sender).ID + " was clicked");
}
protected void Button_Click(object sender, EventArgs e)//this button click will call all the items related to department
[code]....
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Mar 15, 2010
Trying to add some custom code behind the cancel button built into a details view. How would I go about doing this?This is what i have currently. But, when clicked, the cancel button does not pick this up.
[Code]....
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Mar 17, 2011
I built a user control that displays a drop down list of states. I'm using it, but if I try to put it in a listview control, all I get is the frop down with nothing in it.
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Jan 28, 2011
Lets say I have a Web Application with a menu of products. When a user clicks a menu item, then create and display a dynamic set of controls in an Update Panel. I am currently doing this however the PostBack and recreation of controls is tedious and resource intensive.
Not sure about this but is it possible to build a webpage with controls on it, then display it in update panel or IFrame? Then on post back you wouldn't have to recreate everything all over again?
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Apr 1, 2011
I have a loop which creates for each item ID a Dynamic created checkboxlist control
how do I create a dynamic validation control on a dynamic checkboxlist?
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