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Hi,
After binding datagridview with dataset, when users modify, add or delete the datagridview rows, I want to use datasource of datagridview to run OleCommandBuilder object. But an error appears "Unable to cast object of type bindingsource to type datatable"
I am very confused and have you help me how to convert nimdingsource to datatable.....
[Code]
OleDbDataAdapter adap = new OleDbDataAdapter("Select * from tblVATTU where VATTU_ID = ''", con.con);
temp = new DataTable();
MessageBox.Show(dgvVATTU.DataSource.GetType().ToString());
temp = (DataTable)dgvVATTU.DataSource ; // error is here
OleDbCommandBuilder buider = new OleDbCommandBuilder(adap);
adap.FillSchema(temp, SchemaType.Source);
adap.Fill(temp);
It seem to be a solution or an answer.
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Hi,
You need to fill dataset first,
<br />
Dataset dsFunction = New DataSet();<br />
OleDbDataAdapter adap = new OleDbDataAdapter("Select * from tblVATTU where VATTU_ID = ''", con.con);<br />
temp = new DataTable();<br />
adap.Fill(dsFunction);<br />
temp = dsFunction.Tables[0];<br />
Mubashir
Software Architect
Storan Technologies Inc, USA
Every job is a self portrait of the person who did it.
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If the datagrid is empty, then fill it first. And then try to bind the table to the datasource.
DataGrid1.Rows.Add(1); <br />
DataGrid1.Rows[1].Cells[1].Value = "Some String";
Keshav Kamat 
India
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Hi
I am Fresher. i want desing the login page in C#.Net. Using the SqlServer. please give me code or ideas
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What does 'fresher' mean ? What part do you already know how to do ? What part is confusing you ? You didn't ask in the ASP.NET forum, do you mean this to be a web page ?
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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Christian Graus wrote: What does 'fresher' mean ?
Indian English for new recruit, raw out of college. On an unrelated note, why do you insert a space before your question marks?
Cheers,
Vikram.
"But nowadays, it means nothing. Features are never frozen, development keeps happening, bugs never get fixed, and documentation is something you might find on wikipedia."
- Marc Clifton on betas. Join the CP group at NationStates. Password: byalmightybob
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Because, when I was in primary school, I was taught to put a space before an after a question mark. Not saying this is 100% right, but it's what I learned, so it's how I do it.
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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i assume, you did not mean web page.
well, you can use sql server or any other database.
You will have to create database/tables either through the code or should be available in advance.
Accordingly you have to create connection, and a command to read/write/update accordingly.
There are lots of sites explaning the connection to the database.
Keshav Kamat 
India
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Hi!
I am a bit lost. I want to upload multiple files and key-value pairs via HTTP post.
A single file and a single collection of key-value pairs is easy. You just have to use the System.Net.WebClient class and its UploadFile, UploadValues method.
Can anyone explain to me how to post both files and values with one request? I would very much appreciate any hint!
TIA
Pakl
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Hi guys, I have a class as described below
Class#1
IsmartBall <---->An Interface
SmartBall <---->Methods Implementated
All I want to do is that in my form1 OnPaint method if i instantiated smartBall i.e
smartBall sm = smarthBall() so smartBall should be drawn on form1. How may I achieve this functionality. In my smartBall class constructor how can I call it's OnPaint method. Any suggestion i am lost
thanks in advance
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You can't EVER call OnPaint. You call Invalidate() to force a paint event, which calls it. Does this solve the problem ? If your form is invalidated, then the controls on the form will be, too.
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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Thanks for your reply, So how may I build my ping pong game. What I was thinking about is that to instantiatea smartBall class so I can get a ball object to be drawn anywhere I want. Lets say later on, I want to provide a user to drag and drop a ball from a panel of their choice to be played on the board. Please suggest me how can I construct this game looking forward.
Thanks
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The last thing you want, is a control which represents a ball. You may well have a class that represents a ball, but you should just be drawing in your onpaint ( or better yet, in DirectX ), not moving controls about.
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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I'm trying to program a "Windows Control Library" (aka User Control) which is to be embedded into an Internet Explorer webpage. The only way that I've found to be able to call javascript functions from the C# code is to use DOM but this raises a security exception unless I use the .NET Framework Configuration Tool to give it the necessary permissions.
Is there any way to allow an embedded control to call a javascript function without changing settings on the client side?
-Benjamin
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How do I change default startup icon in application?
Thanks in advance.
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Right-click the project in the solution explorer, click menu properties, Application tab, Resources Group ->Icon. This will be slightly different in pre-VS.NET 2005 programming packages.
Regards,
Thomas Stockwell
Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning.
Visit my homepage Oracle Studios[ ^]
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hi
i was installed Sql Server 2005 Compact Edition, but i don't know how to use it in Visual Studio 2005. How to use it ?
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Hello!
hope you all are doing fine! can anyone help me with the simplest possible way of authenticating a windows user(local account) taking login name and password as input?
tried with the WindowsIdentity and WindowsIdentityMembers but they deal with token, i simply want to take the login name and password, and display error if the user is not the valid user of the local machine!
Thanks in advance! !
Adeel
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I need to create a form that in that form open a .chm file. please come someone help me
BAKKAR
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Take a look at the HelpProvider class.
"Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning." - Rick Cook www.troschuetz.de
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Hi, this is my first time trying to use classes on my own. can you show me how to use this class to view the file .chm pls
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The MSDN documentation of the HelpProvider contains all the information you need (including examples). Read through it, drop an instance of the HelpProvider component from the toolbox onto your form and experiment with it.
"Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning." - Rick Cook www.troschuetz.de
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ok 10x i will try. cya my friend if you want something just send an email
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