VB coding issue when updating RRS feed

  • Question

  • Hi Iam getting the following error on my vb code "Failed to convert parameter value from a String to a Int32." Please help

    My code is below

    Dim cmd As New SqlClient.SqlCommand()
            cmd.CommandType = CommandType.StoredProcedure
            'cmd.CommandText = "SMLineUpdate"
            cmd.CommandText = "SMLineUpdate_New"
            'cmd.CommandText = "SMLineUpdate3"
            cmd.Parameters.Add("@Id", SqlDbType.Int).Value = TextBox3.Text
            cmd.Parameters.Add("@Payroll_Id", SqlDbType.Int).Value = Txt1.Text.Trim()
            cmd.Parameters.Add("@ProductCode", SqlDbType.NVarChar).Value = Cmb3.Text.Trim()
            cmd.Parameters.Add("@Description", SqlDbType.NVarChar).Value = Des3.Text.Trim()
            cmd.Parameters.Add("@Qty", SqlDbType.NVarChar).Value = Qty3.Text.Trim()
            cmd.Connection = cn
            ' Try
            ' lblMessage.Text = "Record inserted successfully"
            ' Catch ex As Exception
            'Throw ex
            ' Finally

    Monday, April 1, 2019 1:13 PM


  • A sign when getting

    Failed to convert parameter value from a String to a Int32.

    Means the value can not be converted to an Integer. You should

    1. Check for an empty string
    2. Check if the TextBox.Text value can be converted to a integer.
    Dim value As Integer = 0
    If Not String.IsNullOrWhiteSpace(TextBox3.Text) Then
        If Integer.TryParse(TextBox3.Text, value) Then
            ' valid integer, continue on with the value for "value"
            ' invalid integer
        End If
        ' no value given
    End If

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    • Marked as answer by randy1978 Monday, April 1, 2019 1:44 PM
    Monday, April 1, 2019 1:31 PM