argument out of range parameter name index - sql-server

Question

since i have the code of the auto generated text box
Insert data from auto generated textbox to SQL Server database
i am try to write a code for ensuring of the auto generated text box in FlowLayoutPanel1 contain data
the auto generated text box build depends on the number in Val(Label2.Text) of the real part
and if any text box is null or empty then the process will stop until fill all fields
the auto generated text box will be like this if the Val(Label2.Text)
is equal to 3
so i try this in the save button
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
For k As Integer = 1 To Val(Label2.Text)
If String.IsNullOrEmpty(FlowLayoutPanel1.Controls(i).Text) Then
MsgBox("Error , fill all text box")
Return
Else
UpdateUsers()
i += 1
End If
Next
MsgBox("Done , add all data to database ")
Button3.Enabled = False
End Sub
so i getting error after leave some text box and back to fill it again
and the all of form code is
Imports System.Data.SqlClient
'library for create folders
Imports System.IO
Public Class part
Dim cLeft As Integer = 1
Dim top1 As Integer = 5
Dim i As Integer = 0
Dim path1 As String
Dim cmd As SqlCommand
Public Sub AddNewTextBox()
Dim txt As New System.Windows.Forms.TextBox()
txt.Top = cLeft * 30
txt.Left = 100
'txt.Text = "TextBox " & Me.cLeft.ToString
cLeft = cLeft + 1
txt.ForeColor = Color.White
txt.BackColor = Color.Gray
txt.Font = New Font("Arial", 14.0, FontStyle.Regular)
txt.Size = New Size(350, 31)
txt.Location = New Point(156, 130 + top1)
txt.TextAlign = HorizontalAlignment.Center
FlowLayoutPanel1.Controls.Add(txt)
End Sub
Private Sub part_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'college part number
Label2.Visible = False
'college path folder
Label3.Visible = False
For m As Integer = 1 To Val(Label2.Text)
AddNewTextBox()
top1 = top1 + 35
Next
End Sub
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Me.Close()
End Sub
Private Sub UpdateUsers()
Using cn As New SqlConnection("Data Source=.\SQLEXPRESS;AttachDbFilename=C:\Users\Hazim M\Desktop\stud_project\stud_project\Database1.mdf;Integrated Security=True;User Instance=True")
Using cmd As New SqlCommand("INSERT INTO college_part ([name],[coll_of_part],[part_path]) Values (#name,#coll_of_part,#part_path);", cn)
If i < Val(Label2.Text) Then
path1 = Label3.Text & "\" & FlowLayoutPanel1.Controls(i).Text.Trim & Date.Now.Year
cmd.Parameters.Add("#name", SqlDbType.NVarChar).Value = FlowLayoutPanel1.Controls(i).Text
cmd.Parameters.Add("#coll_of_part", SqlDbType.NVarChar).Value = Label1.Text
cmd.Parameters.Add("#part_path", SqlDbType.NVarChar).Value = path1
cn.Open()
cmd.ExecuteNonQuery()
cn.Close()
If Not Directory.Exists(path1) Then
Directory.CreateDirectory(path1)
Else
MsgBox("folder is existing")
End If
End If
End Using
End Using
End Sub
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
For k As Integer = 1 To Val(Label2.Text)
If String.IsNullOrEmpty(FlowLayoutPanel1.Controls(i).Text) Then
MsgBox("Error , fill all text box")
Return
Else
UpdateUsers()
i += 1
End If
Next
MsgBox("Done , add all data to database ")
Button3.Enabled = False
End Sub
End Class
thank u

Answer 1

I think you need to move dim i Integer=0 to local variable in the Button3_click method. ANd Pass i to the UpdateUser call (add the param to UpdateUser). The current global i keeps adding 1 and eventually out of range.