Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

The GridLineDataGridView learning curve... Part 3

Posted on 2008-06-24
2
Medium Priority
?
269 Views
Last Modified: 2013-12-25
Ok, so I have my GridLineDataGridView in place and it displays the data correctly and suitable, TO START WITH.

Then comes the problem. When I change directory and call gridRefresh() to update the dataset and (hopefully) redraw the grid, I get some unpredictable results. The contents of the new directory aren't displayed.

What command should I use to re-draw the grid? I've tried GridLineDataGridView.redraw() but that just generated a null exception error.

ipaulino, if you are reading this...

Regards

Troubled.
Public Sub gridRefresh()
 
		Dim dt As New DataTable()
		dt.Columns.Add("Original Name")
		dt.Columns.Add("New Name")
 
		Dim pattern As String = patternText.Text
		If pattern.LastIndexOf("(") >= 0 Then
			pattern = pattern.Substring(0, pattern.LastIndexOf("("))
		End If
 
		Try
 
			Dim dirInfo As New DirectoryInfo(dirText.Text)
			Dim fileInfos() As FileInfo
			Dim fileName As String
			Dim extIndex As Integer
 
			fileInfos = dirInfo.GetFiles(pattern)
 
			For Each fileInfo As FileInfo In fileInfos
				extIndex = fileInfo.Name.LastIndexOf(".")
				fileName = fileInfo.Name.Substring(0, extIndex)
				dt.Rows.Add(fileInfo.Name, fileName)
			Next fileInfo
 
			frGrid.DataSource = dt
			setRegKey(dirText.Text)
 
		Catch ex As Exception
 
			frStatusText.Text = ex.ToString
 
		End Try
 
		frGrid.Focus()
 
	End Sub

Open in new window

0
Comment
Question by:jerute
2 Comments
 
LVL 14

Expert Comment

by:Dustin Hopkins
ID: 21859559
not so sure about gridline, but it doesn't look like you are rebinding the grid after you set the new datasource. Focus, usually doesn't cut it. is there a databind method, or maybe thats what redraw is.

something like:
frGrid.DataSource = dt
setRegKey(dirText.Text)
frGrid.DataBind()
0
 

Accepted Solution

by:
jerute earned 0 total points
ID: 21889571
Finally I've settled on the DataGridView.rows.clear() method followed by a complete refresh. This seems to work ok.
0

Featured Post

Keep up with what's happening at Experts Exchange!

Sign up to receive Decoded, a new monthly digest with product updates, feature release info, continuing education opportunities, and more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Have you ever wanted to restrict the users input in a textbox to numbers, and while doing that make sure that they can't 'cheat' by pasting in non-numeric text? Of course you can do that with code you write yourself but it's tedious and error-prone …
In real business world data are crucial and sometimes data are shared among different information systems. Hence, an agreeable file transfer protocol need to be established.
Show developers how to use a criteria form to limit the data that appears on an Access report. It is a common requirement that users can specify the criteria for a report at runtime. The easiest way to accomplish this is using a criteria form that a…
This lesson covers basic error handling code in Microsoft Excel using VBA. This is the first lesson in a 3-part series that uses code to loop through an Excel spreadsheet in VBA and then fix errors, taking advantage of error handling code. This l…
Suggested Courses

877 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question