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Creating an Asynchronous Connection in asp.net vb

Posted on 2009-07-10
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Last Modified: 2012-05-07
I have a form built in asp.net vb.  I am connecting to an SQL Server 2005 database through asp.net vb and having issues with adding information to a table.  I keep getting an error stating that I need to create an Asynchronous Connection.  I cannot figure a way to do this with my code below.I have attached the code that I need assistance with.  Thanks.
Private Sub Process_Information()        
        Reg_Ip = Request.ServerVariables("HTTP_XFORWARDED_FOR")
        If Reg_Ip = "" Then Reg_Ip = Request.ServerVariables("REMOTE_ADDR")
        Dim sqlConnection As New System.Data.SqlClient.SqlConnection
        sqlConnection.ConnectionString = "conn String here"
        Dim sqlCmd As New System.Data.SqlClient.SqlCommand
        sqlCmd.CommandType = Data.CommandType.Text
        sqlCmd.Connection = sqlConnection
        sqlCmd.CommandText = "INSERT INTO dbo_users " _
        & "(Reg_Date, Reg_Ip, Prefix, User_Name, Password, Password_Hint_Question, Password_Hint, First_Name, Middle_Initial, Last_Name) " _
        & "VALUES (@Reg_Date,@Reg_Ip,@Prefix,@User_Name,@Password,@Password_Hint_Question,@Password_Hint,@First_Name,@Middle,@Last_Name)"
        sqlCmd.Parameters.AddWithValue("@Reg_Date", Today())
        sqlCmd.Parameters.AddWithValue("@Reg_Ip", Reg_Ip)
        sqlCmd.Parameters.AddWithValue("@Prefix", dd_Prefix.SelectedValue)
        sqlCmd.Parameters.AddWithValue("@User_Name", tbx_Email.Text)
        sqlCmd.Parameters.AddWithValue("@Password", tbx_Password.Text)
        sqlCmd.Parameters.AddWithValue("@Password_Hint_Question", dd_Password_Hint_Question.SelectedValue)
        sqlCmd.Parameters.AddWithValue("@Password_Hint", tbx_Password_Hint.Text)
        sqlCmd.Parameters.AddWithValue("@First_Name", tbx_First_Name.Text)
        sqlCmd.Parameters.AddWithValue("@Middle", tbx_Middle_Initial.Text)
        sqlCmd.Parameters.AddWithValue("@Last_Name", tbx_Last_Name)
        sqlCmd.Connection.Open()
        sqlCmd.BeginExecuteNonQuery()
        sqlCmd.Connection.Close()
 
    End Sub

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Question by:OB1Canobie
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9 Comments
 
LVL 8

Expert Comment

by:Bobaran98
ID: 24828647
I'm not sure about the Asynchronous error, but just to make sure, are you confident all your form field ids are correct?  One thing that jumps out at me as a possible error is the AddWithValue() for @Last_Name.  You've got:

sqlCmd.Parameters.AddWithValue("@Last_Name", tbx_Last_Name)
Shouldn't it be:

sqlCmd.Parameters.AddWithValue("@Last_Name", tbx_Last_Name.Text)
???  Let me know! :-)
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Expert Comment

by:jinal
ID: 24828659
Hello ,

What is your connection string ?

Please add following to your connection string  "Asynchronous Processing=true"

for example

connectionstring ="server=localhost;integrated security=true;initial catalog=test;Asynchronous Processing=true"



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LVL 15

Expert Comment

by:jinal
ID: 24828676

Private Sub Process_Information()        
        Reg_Ip = Request.ServerVariables("HTTP_XFORWARDED_FOR")
        If Reg_Ip = "" Then Reg_Ip = Request.ServerVariables("REMOTE_ADDR")
        Dim sqlConnection As New System.Data.SqlClient.SqlConnection
        sqlConnection.ConnectionString = "conn String here"
        Dim sqlCmd As New System.Data.SqlClient.SqlCommand
        sqlCmd.CommandType = Data.CommandType.Text
        sqlCmd.Connection = sqlConnection
        sqlCmd.CommandText = "INSERT INTO dbo_users " _
        & "(Reg_Date, Reg_Ip, Prefix, User_Name, Password, Password_Hint_Question, Password_Hint, First_Name, Middle_Initial, Last_Name) " _
        & "VALUES (@Reg_Date,@Reg_Ip,@Prefix,@User_Name,@Password,@Password_Hint_Question,@Password_Hint,@First_Name,@Middle,@Last_Name)"
        sqlCmd.Parameters.AddWithValue("@Reg_Date", Today())
        sqlCmd.Parameters.AddWithValue("@Reg_Ip", Reg_Ip)
        sqlCmd.Parameters.AddWithValue("@Prefix", dd_Prefix.SelectedValue)
        sqlCmd.Parameters.AddWithValue("@User_Name", tbx_Email.Text)
        sqlCmd.Parameters.AddWithValue("@Password", tbx_Password.Text)
        sqlCmd.Parameters.AddWithValue("@Password_Hint_Question", dd_Password_Hint_Question.SelectedValue)
        sqlCmd.Parameters.AddWithValue("@Password_Hint", tbx_Password_Hint.Text)
        sqlCmd.Parameters.AddWithValue("@First_Name", tbx_First_Name.Text)
        sqlCmd.Parameters.AddWithValue("@Middle", tbx_Middle_Initial.Text)
        sqlCmd.Parameters.AddWithValue("@Last_Name", tbx_Last_Name)
        sqlCmd.Connection.Open()
        dim ar as IAsyncResult = sqlCmd.BeginExecuteNonQuery()
        while Not ar.IsCompleted
        End While
        int effected = sqlCmd.EndExecuteNonQuery();  
        sqlCmd.Connection.Close()
         
    End Sub

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Expert Comment

by:ddayx10
ID: 24828700
I think jinal is on the right track...why not just:

sqlCmd.ExecuteNonQuery();
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Author Comment

by:OB1Canobie
ID: 24831182
jinal:

What is the line int effected = sqlcmd.endexecutenonquery(); ??

What is this doing?  I've got an error on this line.  Please help.
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Accepted Solution

by:
jinal earned 400 total points
ID: 24831231
Try this.

Private Sub Process_Information()        
        Reg_Ip = Request.ServerVariables("HTTP_XFORWARDED_FOR")
        If Reg_Ip = "" Then Reg_Ip = Request.ServerVariables("REMOTE_ADDR")
        Dim sqlConnection As New System.Data.SqlClient.SqlConnection
        sqlConnection.ConnectionString = "conn String here"
        Dim sqlCmd As New System.Data.SqlClient.SqlCommand
        sqlCmd.CommandType = Data.CommandType.Text
        sqlCmd.Connection = sqlConnection
        sqlCmd.CommandText = "INSERT INTO dbo_users " _
        & "(Reg_Date, Reg_Ip, Prefix, User_Name, Password, Password_Hint_Question, Password_Hint, First_Name, Middle_Initial, Last_Name) " _
        & "VALUES (@Reg_Date,@Reg_Ip,@Prefix,@User_Name,@Password,@Password_Hint_Question,@Password_Hint,@First_Name,@Middle,@Last_Name)"
        sqlCmd.Parameters.AddWithValue("@Reg_Date", Today())
        sqlCmd.Parameters.AddWithValue("@Reg_Ip", Reg_Ip)
        sqlCmd.Parameters.AddWithValue("@Prefix", dd_Prefix.SelectedValue)
        sqlCmd.Parameters.AddWithValue("@User_Name", tbx_Email.Text)
        sqlCmd.Parameters.AddWithValue("@Password", tbx_Password.Text)
        sqlCmd.Parameters.AddWithValue("@Password_Hint_Question", dd_Password_Hint_Question.SelectedValue)
        sqlCmd.Parameters.AddWithValue("@Password_Hint", tbx_Password_Hint.Text)
        sqlCmd.Parameters.AddWithValue("@First_Name", tbx_First_Name.Text)
        sqlCmd.Parameters.AddWithValue("@Middle", tbx_Middle_Initial.Text)
        sqlCmd.Parameters.AddWithValue("@Last_Name", tbx_Last_Name)
        sqlCmd.Connection.Open()
        Dim ar as IAsyncResult = sqlCmd.BeginExecuteNonQuery()
        While Not ar.IsCompleted
        End While
        Dim effected as Integer = sqlCmd.EndExecuteNonQuery(ar);  
        sqlCmd.Connection.Close()
         
    End Sub

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Expert Comment

by:jinal
ID: 24831232
If still error then please put error detail over here.
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Assisted Solution

by:Bobaran98
Bobaran98 earned 100 total points
ID: 24831336
@jinal:  Is there something missing from that while loop?  Or is that simply a trick to throw code execution into a loop-- a wait-- until the execution completes?

@OB1Canobie:  Don't forget about that tbx_Last_Name.Text issue (line 21 in jinal's code).
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Author Closing Comment

by:OB1Canobie
ID: 31602296
Jinal, your code worked.  Bobaran92, thanks for you assistance.  Did not see the tbx_Last_Name did not have an assigned value.
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