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Hi All:
I'm trying to dynamically create a datagrid and fill it with XML data. But I get an "Object reference not set to an instance of an object." error when running it.
See the code below. What am I missing?
<br />
Public Sub CreateDynamicGrid()<br />
<br />
Dim ds As New DataSet<br />
Dim grid As System.Web.UI.WebControls.DataGrid<br />
<br />
Try<br />
'Place the XML information into a dataset<br />
ds.ReadXml("C:\Temp\test.xml")<br />
<br />
'The dataset is used as the data source for our newly created datatrid grid <br />
grid.DataSource = ds<br />
grid.DataBind()<br />
<br />
'grid is added to the PlaceHolder<br />
PlaceHolder.Controls.Add(grid)<br />
<br />
Catch ex As Exception<br />
Response.Write(ex.Message.ToString)<br />
<br />
End Try<br />
<br />
End Sub<br />
Thanks in advance!
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Hi Nicki
Which line is thowing the error? Maybe loose the Try/Catch whilst debugging the problem.
Cheers
Tom
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Hi Tom:
It's this line:
---------------------
grid.DataSource = ds
---------------------
I don't understand how the dataset could be blank. The file I'm pointing to in the ReadXML method has data in it.
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I don't think it's the dataset, It looks like you have not instantiated the grid.
... as Guffa has already eluded to 
Hope this helps
Tom
-- modified at 12:51 Monday 11th June, 2007
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You haven't created any DataGrid object, only a reference that can be used for the object.
---
single minded; short sighted; long gone;
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You're right Guffa.
It works now, thanks!
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Hello,
[2005]
I have a windows application and have used the windows installer to create the setup and deploy the project.
The application has been completed, and the customer just wants add some small modules to the project, and change some other modules to make more for the business.
However, the customer doesn't want to install the whole application and just wants to install the parts that have been updated. Using the windows installer the customer has to install the whole application.
Is there a installer (maybe third party) for creating a setup program that will only update the parts that have been changed or been added.
I did use clickOnce, but the customer didn't like this method as it installs under documents and settings.
Many thanks for any suggestions,
Steve
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Hi
I am opening up a workbook from Microsoft Outlook an entering a hyperlink to an email message into one of the cells. At first I was using the Hyperlink function but i keep getting a dialog telling me this function is not supported (the function works though as the hyperlink apppears and is functioning when i open the workbook afterwards). I tried to get round this by using file:///filename - this appears as standard text in the cell until i double click on it and then click away - at this point it turns into a hyperlink.
I have tried using file:/// and then programatically selecting the cell and moving away but to no avail.
Does any one know of a suitable way of doing what I want without thest issues?
Thanks
Dan
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Dont know if this will help any but I used to Hyperlink thousands of cells down column A with a loop.
Here is a piece.
ActiveSheet.Hyperlink.Add Anchor:=Sheet1.cells(a,1), _
Address:=Sheet1.cells(a,1).value, _
TextToDiaplay:=Sheet1.cells(a,1).value
Then it would loop to A2, A3 and so on down the line till it errored cause I did not know how to stop the loop. (a,1) is column A and row 1, I think, maybe first row and column 1. I think row is mentioned before column???
This stated whatever text was in cell A1, hyperlink it, yes in my case it was a web address, this was several years ago. Now I use a third party macro recorder, not VBA, and it double clicks on the cell as you mentioned and creates the hyperlink through its double click leftmouseclick code.
Hope the snippit above gives you an idea, check the help file if needed.
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Hi I'm using the following code to create an outlook mail message, but need to bold and undeline certain lines in the message body. How can I do this?
<br />
Dim oOutlook As New Outlook.Application<br />
Dim oMailitem As Outlook.MailItem<br />
<br />
oMailitem = CType(oOutlook.CreateItem(Outlook.OlItemType.olMailItem), Outlook.MailItem)<br />
oMailitem.To = "<name@domain.com>"<br />
oMailitem.Subject = "Order Request"<br />
Dim MailBody As String = "Hi," _<br />
& ControlChars.NewLine _<br />
& "Please could you place orders as per the requirement below" _<br />
& ControlChars.NewLine _<br />
& "I WANT THIS LINE BOLD....." _<br />
& ControlChars.NewLine _<br />
& "Thanks!!"<br />
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Hmmm I havent tried this yet but here are some suggestions:
If the users are recieving the mail as html you could use html tags in you msg.Body
Or since outlook uses word as its email editor - open up word (in code and see what functionality this offers you)
Hope these pointers help
If i get time to look into this i shall try them and let you know my results
Dan
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How can i write a code to edit data from a textbox in a datagrid in vb.net
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Explain more if you want to gat an answer
When you get mad...THINK twice that the only advice
Tamimi - Code
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Private Sub Button1_Click(ByVal sender As System.Object, _
ByVal e As System.EventArgs) _
Handles Button1.Click
End Sub
Explain meaning of this code line below on button click event-->>>
(ByVal sender As System.Object,ByVal e As System.EventArgs)
Nitin Jenwal
-- modified at 7:10 Monday 11th June, 2007
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google broken where you live ?
The sender is the control that raised the event. EventArgs is useless by itself, but provides a base class for event args that actually contain information about an event, such as the key that was pressed, or the mouse location.
Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog
"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )
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Thnx Great
But Are we writing it as Byval
Nitin Jenwal
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Basically because you are not going to make any changes to the values passed.
Remember that ByVal is if you are going to view the data or move it to someplace to do some work on it. ByRef is when you want to make a change to the data in that variable.
Tom Wright
tawright915@gmail.com
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I am adding an item to a listview from a textbox on a button click. when i add some number of items, i am not able to view the recently added item in the listview. Vertical scrollbar is present but it doesnt automatically scroll to display the recently added item. Does anyone have a solution for this?
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Means items are added but you are not able to view them ???
-koolprasad2003
Be a good listener...Because Opprtunity knoughts softly...N-Joy
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Thanks a lot for the help...i could finally see the recently added item using EnsureVisible property of the listview
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Hi,
In my application I have:
1 MDI (MDIParent1)
2 Forms (frm1 and frm2)
1 Module (module1)
In MDIParent1 I have the foolowing code:
Sub New()
InitializeComponent()
Dim f1 As New frm1: f1.MdiParent = Me : f1.Close()
Dim f2 As New frm2: f2.MdiParent = Me : f2.Close()
end sub
I would like to init module1 too like I done for frm1 and frm2 because when
I am calling a function that is in the module I get an error:
"The type initializer for 'ApplicationName.Module1' threw an exception."
In addition (in the add watch during debug):
"reference to a non-shared member requires an object"
Please help
Eric H.
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hi am new in Vb.Net, i need a Site where i can Download free VB.Net E-books,
Thannks
Vuyiswa
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Hi
check this site www.4shared.com
Harini
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