Number of query values and destination fields are not the same.

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VB

Dim con As New OleDbConnection
        Dim cmd1 As New OleDbCommand
        Dim ddt As New OleDbDataAdapter
        Dim dtd As New DataSet

        con.ConnectionString = ("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=D:\Ticket.mdb")
        cmd1.Connection = con
        con.Open()
        cmd1.CommandText = "INSERT INTO regis VALUES ('" & TextBox1.Text & "','" & TextBox2.Text & "' ,'" & TextBox3.Text & "' )"
        cmd1.ExecuteNonQuery()
        MessageBox.Show("Succesfully Registered")
        con.Close()

What I have tried:

Please help...i tried checking but its seems good cant know whats the problem

Posted 20-Oct-16 7:02am

Member 12805540

Updated 20-Oct-16 7:24am

Wendelius

v2

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[no name] 20-Oct-16 13:07pm

Other than the obvious SQL injection attack invitation, the error message tells you exactly what the problem is. The number of values you are trying to stuff into regis do not match.

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Wendelius · Answer 1 · 2016-10-20T07:24:00

Never rely on the implicit column amount or order in an INSERT statement. Instead, define all the columns you're going to use. So the syntax should be

SQL

INSERT INTO TableName
(ColumnName, ColumnName, ...)
VALUES
(Value, Value, ...)

And the other thing is that you should always use parameters with queries. Never concatenate values directly to SQL statements. For more information have a look at OleDbParameter Class (System.Data.OleDb)[^]

Also you should use using statement to ensure that objects are properly disposed. Even though the article is written about SqlCommands, have a look at Properly executing database operations[^] The same principles apply to OleDbCommand.