Solved

Finding the autoid number of a sql insert query (.net frameowork)

Posted on 2003-11-05
2
874 Views
Last Modified: 2007-12-19
is it possible to find the autoincrement id of a record that has been inserted without doing another call to the database. I need to be able to do this in asp.net.

Here is an example:
The table consists of three columns; id (autoincrement), username, password

Dim oConn As sqlConnection
Dim oCmd As sqlCommand
Dim SQLQuery As String

SQLQuery = "INSERT INTO TB_Names "
SQLQuery = " (username, password) " & _
                   " Values('kevin','password')

oCmd = new SqlCommand(SQLQuery)
oCmd.Connection = oConn
oConn.Open()
oCmd.ExecuteNonQuery()
oCmd.Connection.Close()

surely there should be something like oCmd.max(id)
0
Comment
Question by:ipokkel
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 
LVL 28

Assisted Solution

by:sybe
sybe earned 125 total points
ID: 9685277
Right after the insert do this:

sSQL = "Select @@IDENTITY"
oRS = oConn.Execute(sSQL)
iNewId = oRS(0).Value
oRS.Close
0
 
LVL 6

Accepted Solution

by:
Programming_Gal earned 125 total points
ID: 9685369
http://www.codeproject.com/aspnet/fileupload.asp

This one is in C#, should be able to convert easily. ;p

private int WriteToDB(string strName, string strType, ref byte[] Buffer)
{
      int nFileID = 0;

      // Create connection
      OleDbConnection dbConn = new OleDbConnection(GetConnectionString());

      // Create Adapter
      OleDbDataAdapter dbAdapt = new OleDbDataAdapter("SELECT * FROM tblFile", dbConn);
                  
      // We need this to get an ID back from the database
      dbAdapt.MissingSchemaAction = MissingSchemaAction.AddWithKey;
                  
      // Create and initialize CommandBuilder
      OleDbCommandBuilder dbCB = new OleDbCommandBuilder(dbAdapt);

      // Open Connection
      dbConn.Open();
                              
      // New DataSet
      DataSet dbSet = new DataSet();
                              
      // Populate DataSet with data
      dbAdapt.Fill(dbSet, "tblFile");

      // Get reference to our table
      DataTable dbTable = dbSet.Tables["tblFile"];

      // Create new row
      DataRow dbRow = dbTable.NewRow();

      // Store data in the row
      dbRow["FileName"] = strName;
      dbRow["FileSize"] = Buffer.Length;
      dbRow["ContentType"] = strType;
      dbRow["FileData"] = Buffer;

      // Add row back to table
      dbTable.Rows.Add(dbRow);

      // Update data source
      dbAdapt.Update(dbSet, "tblFile");

      // Get newFileID
      if( !dbRow.IsNull("FileID") )
            nFileID = (int)dbRow["FileID"];    //<<<<<<<<This is the auto ID
                  
      // Close connection
      dbConn.Close();

      // Return FileID
      return nFileID;
}
0

Featured Post

Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

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

I have helped a lot of people on EE with their coding sources and have enjoyed near about every minute of it. Sometimes it can get a little tedious but it is always a challenge and the one thing that I always say is:   The Exchange of informatio…
Have you ever needed to get an ASP script to wait for a while? I have, just to let something else happen. Or in my case, to allow other stuff to happen while I was murdering my MySQL database with an update. The Original Issue This was written…
This video Micro Tutorial shows how to password-protect PDF files with free software. Many software products can do this, such as Adobe Acrobat (but not Adobe Reader), Nuance PaperPort, and Nuance Power PDF, but they are not free products. This vide…
Michael from AdRem Software explains how to view the most utilized and worst performing nodes in your network, by accessing the Top Charts view in NetCrunch network monitor (https://www.adremsoft.com/). Top Charts is a view in which you can set seve…

688 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