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And option could be to find out where/ if Excel is installed on a machine via the registry.
Then open the fileinfo (use Diagnostics.FileVersionInfo and FileVersionInfo.GetVersionInfo(strPathToFile)) and extract the excel.exe file version.
Based on the result of that, you will know what excel version the user has.
- Dan Nobel
"The question is not how far. The question is, do you possess the constitution, the depth of faith, to go as far as is needed?"
boondock saints
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hi
u go to help menu and see that ABOUT tab.u will get the version
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Iam Sorry , vry simple Problem
I got this Error in ConnectionString..So pls Help me ..
I want to take the Database TablesName
The ConnectionString property has not been initialized.
Dim con As New SqlConnection
Dim cmd As New SqlCommand
Dim dr As SqlDataReader
Try
constr = "Initial Catalog=Pubs;User ID=sa;Password=sa;Data Source=.;"
con.Open()
cmd = New SqlCommand("select * from tablename", con)
dr = cmd.ExecuteReader()
While (dr.Read())
TextBox1.Text = (dr(0))
End While
Catch ex As Exception
MsgBox(ex.Message)
End Try
con.close
Thanking you
Somasundaram G
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I see two problems
1 - you set a connection string but don't use it
2 - you don't specify a data source ( although it looks like it's SQL Server )
Christian Graus - C++ MVP
'Why don't we jump on a fad that hasn't already been widely discredited ?' - Dilbert
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I didnt use the Datasource and connectionstring also but again same error The ConnectionString property has not been initialized. so pls Wt i do .so pls help me.....
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I don't understand, how do you expect this to work without a connection string ? you have what looks like one, but it's not used anywhere. How did you come up with this code ?
Here[^] are the docs for the SqlConnection class. Basically, you need to pass in a valid connection string to the constructor.
Christian Graus - C++ MVP
'Why don't we jump on a fad that hasn't already been widely discredited ?' - Dilbert
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Christian Graus wrote: How did you come up with this code ?
Thats the million dollar question that comes to my mind lots of times when seeing something like this.
I am not saying the OP did this - but many times people just copy paste some code and when it does not work as expected, they post it verbatim in forums to get an answer.
I can understand if the problem was related to say, Graphics, drawing or some bit shifting etc., but something fundamental as database handling needs to be learnt and not copied.
Thanks for listening, I needed to say this sometime.
Shreekar
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Hay to all,
I have facing problem getting textbox values which were created runtime in the gridview of vb.net.
i created textbox in the gridview column and entered the value in it. now when pages is refreshed i want to read that value of textbox.
can any one help me on this?? this is very urgent...
TC
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Forgive me I am somewhat of an amature programmer.
I have created a simple VB application which consists of a form with various values displayed and an "update" button. I would like to be able to up date the values by hitting the push button. However, what I would like is to extract data from an excel file stored on our system somewhere. The excel file is updated periodically but when I hit the button on the VB form I want the latest data to be captured and displayed.
Any ideas?
Nigel
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There's a toolkit from MS for talking to Office from .NET.
Christian Graus - C++ MVP
'Why don't we jump on a fad that hasn't already been widely discredited ?' - Dilbert
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I will also post this in ASP forum. I have a general question. I want to create a "webbased, interactive, and collaborative classroom learning tool". I believe ASP would be a good language for this. However, I also have a strong need to become proficient in VB. My application will be a type of question and answer game to be used in the classroom.
Here is my question; If I first build it entirely VB.net as a VB application, how easy is it to then move it to the Web using ASP?
You can tell from my question, I am not an expert in either or I wouldn't be asking. I know some VB but no ASP. I have six months to work on this so I am somewhat confident I can do whatever needs to be done.
Thanks,
Jinx
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asp is ALWAYS a disaster. ASP.NET is a far better choice.
Keith Jenkins wrote: If I first build it entirely VB.net as a VB application, how easy is it to then move it to the Web using ASP?
Oh, you mean ASP.NET ? Virtually impossible. The web and windows are two different worlds, with different UI controls and paradigms.
What do you want this tool to do ?
Christian Graus - C++ MVP
'Why don't we jump on a fad that hasn't already been widely discredited ?' - Dilbert
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Thanks for responding. Yes I do mean ASP.net but it doesn't sound like it will be a good choice.
The application will need to do several things. The easy way to think of it is to imagine the Jepardy game being played in a classroom. It can't be exactly like Jepardy because of copy writes and legal issues. The game would be hosted via the web but the only competition would be within the classroom. In other words, one class would not compete with another in a different location. The game would need to do all the typical things a question/answer format requires. Points, levels of questions, teams, history etc. Here is the unique part, the content would be collaborative from teachers and professors anywhere. For instance, a physics teacher could build game content based around a subject and then use if for their class. However, another teacher, anywhere in the world could take a look at what the first teacher did and use and/or modify it for their class. This means there will need to be a database on the server and and user friendly interface to build content to update and store all the content.
Seems like a lot to me but I would start modest and add feature as I go. Since I need to learn the VB.net for my employment perhaps I could use it as a prototype of sorts. You say there is no conversion path from VB.Net to ASP.net so I would have to rewrite it. Perhaps it should not be in ASP.net? I am not locked into ASP.net like I am VB.net. Any suggestions on what might be a better language for the web world?
Sorry to be so long on the explanation.
Thanks, Jinx
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Keith Jenkins wrote: You say there is no conversion path from VB.Net to ASP.net so I would have to rewrite it.
Well, the UI you would have to rewrite. Not the business objects, if you structure it properly.
Keith Jenkins wrote: Perhaps it should not be in ASP.net?
It sounds to me like ASP.NET would be a likely candidate, you don't need the form to do anything apart from respond to events, right ?
Keith Jenkins wrote: Any suggestions on what might be a better language for the web world?
C# and VB.NET are a direct tie, because ASP.NET is the best way to write websites that I know of.
Christian Graus - C++ MVP
'Why don't we jump on a fad that hasn't already been widely discredited ?' - Dilbert
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As Christian says, best to move straight to VB .NET/ASP.NET.
Keith Jenkins wrote: If I first build it entirely VB.net as a VB application, how easy is it to then move it to the Web using ASP?
It depends how well-designed the desktop version is. Rocky Lhotka's business objects framework (CSLA.NET - http://www.lhotka.net/[^]) is about this kind of thing. However, his framework is big and complex and is aimed at enterprise apps.
Kevin
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On the Y axis of a graph, if the graph starts at 0 and goes to 10000. Is there a way you can force the graph to display the Y values to include a comma so that 10000 renders as 10,000.
Thanks
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use format string like this:
Dim cnt As Integer = 100000
MsgBox(cnt.ToString("###,###,###"))
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Thanks for the reply
Here is the code that I used to get the formatting I wanted.
With .Grid.AxisY
.AxisMode = AxisMode.ValueLinear
.AxisScale = AxisScaleType.UserDefined
.LabelFormatMask = "###,###,###"
.GridLinesOn = True
.GridLineProperties.Color = Color.DarkGray
.MaxAxisValueUser = highest
.MinAxisValueUser = 0
.TickMode = TickMode.OnStartAtZero
.MajorTickInterval = 5
.MajorTickCount = 0 'If count is nonzero, interval is ignored
.LabelProperties.Font = New Font("Tahoma", _
8, FontStyle.Bold)
.LabelProperties.Font.Dispose()
End With
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hello every one ...
i am very thankfull to the people who r helping me in clarifying my doubts...
I have decided to do a project can u please tell an intresting topic on which i can do a project.. which will also be usefull in realtime .. or in future...
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I don't get why so many people ask this. Choose a project based on your skillset and your needs, we can't really answer you.
Christian Graus - C++ MVP
'Why don't we jump on a fad that hasn't already been widely discredited ?' - Dilbert
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I am new to VB 2005 .Net.
I want to read the table schema from my database and programmatically set the maximum input length of each text column of my datagridview.
However I cannot find the property I need to update. The only examples I have found require you to remove the column and then add it back from a new datagridviewtextboxcolumn. Surely there is a simpler way. Other third party grids allow you to refer to the maximum input length directly.
Does anyone have a suggestion?
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You can use "MaxInputLength" property of "DataGridViewTextBoxColumn".
This Property Gets or sets the maximum number of characters that can be entered into the text box column
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Can you give me an example or code. I can't see how to relate a "DataGridViewTextBoxColumn" to my column. Thanks for your reply and help.
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CType(Me.DataGridView1.Columns(0), DataGridViewTextBoxColumn).MaxInputLength = 10
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Thanks you're a life saver
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