i want to create a control at runtime and i have the control type(mean class Name) in a string varriable..likei have the string varriable named controltype="Textbox" or controltype="Button" or controltype="Dropdown" now i want to create this control at run time how can i create this type of control .
View 3 RepliesMy scenario require's me to create a control from a string that contains the controls name, for example
string a = "TextBox";
using the above string a i need to create the control.Iam using Visual Studio 2008 Pro ASP.Net 3.5
I am currently trying to find a way to convert a string into an asp.net server control.I am storing the asp.net code of Custom Web User Controls in a database and I'm hoping to retrieve this code, convert it to a control and then render the control to the page.The code stored in the database will be asp.net code, not html code. i.e. <asp:Label ID='lbl' runat='server' />
View 3 RepliesOn the WebFrmSales.aspx, regarding the textbox controls, after the user have updated the SQL SERVER table with it. I tried to write the coding to clear all the textbox control but it not working.
This is the error message generated:
Error 6 Value of type 'String' cannot be converted to 'System.Web.UI.Control'.
This is the coding using VB Scripting
Code:
[code]....
i have problem in using ajax control , till morning it everything was file , now when i add any new ajax control it shows the error Control canot be created because visual studio cannot find the control's type in the control assembly then if i press OK it says The operation could not be completed . invalid FORMATETC structure
View 5 RepliesI have a Web Site project, and within it I have a user Web Control defined in an ascx file.The control is added to the Site.Master, and it shows up correctly on the page and everything is fine.I need to override some of the control's fields on one of the pages that derive from Site.Master.
// In OnLoad:
MyControlName control = (MyControlName) Page.Master.GetBaseMasterPage().FindControl("controlID"));
The issue is that MyControlName doesn't register as a valid Type on the child page. If I add a second instance of the control to the child page directly, the above works as needed, but if the control isn't placed directly on the page, and instead is only defined in the master page, the type is undefined. The control is not in a namespace, and is defined within the project, so I don't know why it is having such an issue location the appropriate type.If I put a breakpoint in the OnLoad, the type listed for the control is ASP.my_control_name_ascx, but using that does not work either. Why can't the child class reference the correct type? Can I fix this?
How to create Grid view control inside Repeater control.
View 7 RepliesI was working with treeview and bumped into this problem where i need to add child nodes to a treeview control,these child nodes are a combination of textbox and button control so that
i should be able to save the text as new child control,i tried overiding the pre render and post render text but didn't get the solution.
I have a FormView that allows a user to register for a company event. I want to do a couple of things with this form.
1. I need to write this data to a MS SQL database
2. I need to send an email confirmation of their registration to their email.
I know how to do both of these things, but i am having trouble doing both at the same time.
It would be nice if I could do it in one click, but I coded it into two pages to try to help simplify it.
The first page allows the user to input their information into a formview and when they click the submit button, it places those answers into session variables:
[Code]....
[Code]....
The Second page confirms the users information by taking those session variables and placing them into labels:
[Code]....
[Code]....
However, after I place information into the formview on the first page, it throws up this error:
"Conversion from type 'TextBox' to type 'String' is not valid".
I have a gridview which I'm trying to get the display of phonenumbers listed in a certain display format; (xxx) xxx-xxxx.If I have the code such as this, it displays the unformatted phone number and (000) 000-0000 for the null items.
[Code]....
I have a web in ASP.NET AND CODE IN VB MY DATABASE IS ACCESS WHICH WAS CREATED INITIALLY AND OLD DATA IS ACCESSED FROM THIS ACCESS DATABASE.
THE PROBLEM IS WHEN THE FIELD IS BLANK THE FOLLOWING ERROR COMES
Conversion from type 'DBNull' to type 'String' is not valid.
MY CODE IS AS UNDER
Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnSubmit.Click
Dim PNO As String = inputtxt.Text
Dim connectString As String = "Provider=Microsoft.Jet.OLEDB.4.0;" & _
"Data Source=C:awingAWing.mdb"
Dim con As OleDbConnection = New OleDbConnection(connectString)
con.Open()
Dim qstr As String
qstr = "select * from PersData where PNO='" + inputtxt.Text + "'"
[Code] .....
How can I get all the textboxes inside a create user wizard control using getElementsByTagName().
Below is my JQuery code:
[Code]....
The above code isn't displaying hint text when the textbox retreives focus.
I think there is something wrong with this getElementsByTagName("asp:TextBox"); , I have also tried getElementsByTagName("TextBox"); , getElementsByTagName(":textbox"); and getElementsByTagName("input"); .
But no one of them gets the textboxes array.
Can anyone tell what will be the correct syntax for getting all the textboxes inside a create user wizard control using getElementsByTagName()?
I want to put a Login Control and a Create User Control on the same page.. just wondering, before I start am I going to run into any problems by doing this?
View 2 RepliesI'm trying to pass email addresses from an array to a stored procedure, then display the results in my gridview. I get the following error:No mapping exists from object type System.String[] to a known managed provider native type.On this line: Dim DR As SqlDataReader = MyCommand.ExecuteReader
[Code]....
I need to create a reusable custom control,which is like a form containing a listbox and some fields.The fields can be either textbox or combobox as needed for different applications,which can be selected on the property of the form onwhich page that i am using it,also i needed to specify the number of fields in that property.And also need place 3 buttons below for edit and delete the selected item in the listbox and a button to save.Data will be binded from the database as needed for different applications.
tell me with code how to create it using asp.net server control in C#.
I then found an excellent tutorial with code! It is the following: [URL] It works perfectly but only with TextBox controls. Change the TextBox to Label and it doesn't work (neither will ListBox). I have been trying to get it to work and it may have something to do with ViewState not being enabled for these other controls. I managed to get around the MasterPage and container problems, but can't get it to work with either Labels or ListBoxes. (As I understand it, the Load View State stage is not re-populating the controls from the previous time it was posted for these other two controls.) Does anybody know how? If I could get the C# code working (with Label instead of TextBox, e.g.)
View 13 Replies'm getting the above error on one server (production of course, it's always production). On two other servers and in my local dev server, the exact same code runs fine. I do see the Display property has ThemableAttribute(false) in the documentation, so the fact that it IS working seems to be the anomoly, but how could this be working in 75% of the environments I'm testing in?
View 5 Repliesget error in the header after this
[Code]....
I would like to get help on designing a custom Control with different type of button etc...url=http://postimage.org/image/upi8l8g4/][img]http://s3.postimage.org/upi8l8g4/site_login_box_full.jpg[/img][/url]is all should be Image?how to set the background?Round edges of the Control panel..?the background of its header...
View 8 RepliesI need to create a user control. This control is so simple. It consists of a "Label" control and a "Textbox" control. The purpose of this control is just to be dropped onto a web page and have a user enter a single value into the textbox portion. This is the only code I have in the code-behind page of the control.
Public MustInherit Class AlbumName
Inherits System.Web.UI.UserControl
Private _text As String
Public Property Text() As String
Get
Return _text
End Get
Set(ByVal value As String)
_text = value
End Set
End Property
End Class
I would like to put a recognized event such as a KeyPress event in this control so that I can validate the users input.
Is it possible to only display the desired file type in the file type dropdownlist in the browser window when we click the browser button of the fileupload control of asp.net? If yes then how?
View 1 Replies[URL]....
i have used above code but is giving error
Control 'contentPlaceHolder1_txtName' of type 'TextBox' must be placed inside a form tag with runat=server.
wt should i do
i have copied the above code as it is .
How would I create an instance of a type if all I have is the type in string form?
[Code]....
Now if I wanted to create and instance of myType how would I do that ?
I am realizing a table with multiple rows for a Sharepoint webpart.
In this project, I would like to have a new html control which contain a LinkHtml in one column and another label in another column.
Essentially this html control would be a row used for my html table.
At the moment i am doing a row like this in the main class :
[Code]....
Basically, what I did is that: I have a table in SQL database and some of data fields allow null. I built Objectdatasource through dataset. When I built update page using dataset. It generate the following error before showing the update page correctly. It seems I have issue to retrieve the null value from the database through using objectdatasource through dataset. Any suggestions?An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code
View 6 Replies