Member Avatar for noel9

pl help

i m getting insert into error

Private Sub Addbtn_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Addbtn.Click
        Dim mycmd1 As OleDbCommand
        Dim sqlq1 As String
        Try

       
            If Addbtn.Text = "Add" Then
                Idtxt.Text = Me.max + 1
                clear()
                Addbtn.Text = "Save"
                
            Else

                sqlq1 = "Insert into Member values(" & Idtxt.Text & ", '" & Nametxt.Text & "', '" & DateTimePicker1.Value & "', '" & gendercb.Text & "', '" & Classcb.Text & "','" & WingCb.Text & "', '" & FloorCb.Text & "', '" & RoomCb.Text & "', '" & occtxt.Text & "')"
                mycmd1 = New OleDbCommand(sqlq1, con)
                mycmd1.ExecuteNonQuery()
                MsgBox("added succesfuly")
                RecordRefresh()  // refresh the record
                
                Addbtn.Text = "Add"

where idtxt is number and remaining are text
and max is total row count

pl...........
help

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  • Latest Post Latest Post by noel9

Dani AI

Generated

— good progress getting past the original INSERT error. The new "data type mismatch" usually means one or more values you send do not match the column types in the database. Common causes are sending text where an integer is expected, sending a formatted string for a date when the provider expects a DateTime, or relying on column order instead of a column list (which already recommended fixing).

Primary fixes to try:

  • Stop concatenating SQL; use parameterized commands and set each parameter's type explicitly.
  • Validate/convert inputs before adding them (use Integer.TryParse for IDs, ensure a DateTime value for date fields).
  • Check the table schema (e.g., run PRAGMA table_info(Member) in SQLite) to confirm column names and types and use an explicit column list in INSERT so column order cannot cause mismatches.

Example pattern (VB.NET, using System.Data.SQLite for clarity):

Dim sql As String = "INSERT INTO Member (Id, FullName, JoinedOn, Gender, Class, Wing, Floor, Room, Occupation) VALUES (@id,@name,@date,@gender,@class,@wing,@floor,@room,@occ)"
Using cmd As New System.Data.SQLite.SQLiteCommand(sql, conn)
    Dim idVal As Integer
    If Not Integer.TryParse(txtId.Text, idVal) Then Throw New InvalidOperationException("Id must be numeric")

    cmd.Parameters.Add("@id", DbType.Int32).Value = idVal
    cmd.Parameters.Add("@name", DbType.String).Value = txtName.Text
    cmd.Parameters.Add("@date", DbType.DateTime).Value = datePicker.Value
    ' add remaining parameters with correct DbType...
    cmd.ExecuteNonQuery()
End Using

Quick troubleshooting tips:

  • Print the full exception (including InnerException) to see which column/type failed.
  • Test the same INSERT directly in a SQLite client after filling in literal values.
  • If using an OLE DB provider for Access instead of SQLite, remember date literal rules differ (Access uses #date#). Matching types and using parameters will remove most "data type mismatch" errors.

Recommended Answers

All 2 Replies

Member Avatar for nytro

You would have to specify the fields that you're inserting into like:

Insert into Member(?,?,?,?,?,?,?,?,?) values(" & Idtxt.Text & ", '" & Nametxt.Text & "', '" & DateTimePicker1.Value & "', '" & gendercb.Text & "', '" & Classcb.Text & "','" & WingCb.Text & "', '" & FloorCb.Text & "', '" & RoomCb.Text & "', '" & occtxt.Text & "')


This is because i don't really know your member_table values.....!!!

Member Avatar for noel9

thanks i solved this error but new error is coming data type mismatch what should i do for this

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