Imports System
Imports System.Text
Imports System.IO
Imports System.Data
Imports System.Data.SqlClient
Imports Microsoft.VisualBasic
Imports System.Configuration

Public Class createformcode
Inherits System.Web.UI.Page
Protected WithEvents tblList As System.Web.UI.WebControls.DropDownList
Protected WithEvents GetTable As System.Web.UI.WebControls.Button
Protected WithEvents MyDataGrid As System.Web.UI.WebControls.DataGrid
Protected WithEvents Button1 As System.Web.UI.WebControls.Button
Protected WithEvents myPanel As System.Web.UI.WebControls.Panel
Protected WithEvents pnlTextarea As System.Web.UI.WebControls.Panel
Protected WithEvents taResults As System.Web.UI.HtmlControls.HtmlTextArea

#Region " Web Form Designer Generated Code "

'This call is required by the Web Form Designer.
<System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()

End Sub

Private Sub Page_Init(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Init
'CODEGEN: This method call is required by the Web Form Designer
'Do not modify it using the code editor.
InitializeComponent()
End Sub

#End Region
Dim sqlText As String
Dim ds As New DataSet()
Dim dbComm As New SqlDataAdapter()
Dim conn As SqlConnection
Dim sqlServer As String

Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
sqlServer = GetSqlConn()
conn = New SqlConnection(sqlServer)


If Not IsPostBack Then
sqlText = "select id, name from sysobjects where xtype='U' order by name"
dbComm = New SqlDataAdapter(sqlText, conn)
dbComm.Fill(ds, "AllTables")
tblList.DataSource = ds.Tables("AllTables").DefaultView
tblList.DataTextField = "name"
tblList.DataValueField = "name"
tblList.DataBind()
End If


End Sub

Function CreateValidator(ByVal myName As String) As String
Dim mySB As StringBuilder = New StringBuilder()

REM -- use :<some text>: as placeholders
mySB.Append("<asp:RequiredFieldValidator runat=""server"" id="":Name:"" ControlToValidate="":control:"" ErrorMessage="":errMsg:"" display=""Static"">This Required Field!</asp:RequiredFieldValidator>")

mySB.Replace(":Name:", "vld" & myName) 'add the validator name
mySB.Replace(":control:", "at" & myName) 'add the control name
mySB.Replace(":errMsg:", myName & " is required")

Return mySB.ToString()

End Function


Function GetSqlConn() As String
Dim DSN As String = ConfigurationSettings.AppSettings("DSN")
Return DSN
End Function


Sub GetTable_Click(ByVal sender As Object, ByVal e As EventArgs)
Dim sqlText As String
sqlText = "SELECT syscolumns.name, syscolumns.isnullable FROM sysobjects INNER JOIN syscolumns ON sysobjects.id = syscolumns.id where sysobjects.name = '" & tblList.SelectedItem.Text & "' ORDER BY syscolumns.colid"

REM -- Connect to SQL
dbComm = New SqlDataAdapter(sqlText, conn)

REM -- Fill DataSet
dbComm.Fill(ds, "TestData")
MyDataGrid.DataSource = ds.Tables("TestData").DefaultView
MyDataGrid.DataBind()


REM -- Show the results
myPanel.Visible = True

End Sub


Sub Button1_Click(ByVal sender As Object, ByVal e As EventArgs)

Dim i As Integer
Dim _item As DataGridItem
Dim dr As DataRow
Dim sb As StringBuilder = New StringBuilder()
Dim strOutput As String

REM -- Auto Generate The Form
sb.Append("<form runat=""server"" id=""form2"" name=""form2"">" & Chr(13) & Chr(10))
sb.Append(" <table border=1>" & Chr(13))


For i = 0 To MyDataGrid.Items.Count - 1
REM -- Get the checkbox
_item = MyDataGrid.Items(i)
Dim addCheckBox As CheckBox = CType(_item.FindControl("chkAdd"), CheckBox)
Dim validCheckBox As CheckBox = CType(_item.FindControl("chkValid"), CheckBox)

If addCheckBox.Checked Then
sb.Append(" <tr>" & Chr(13))
sb.Append(" <td>" & _item.Cells(1).Text & "</td>" & Chr(13))
sb.Append(" <td>")
sb.Append("<asp:textbox id=""at" & _item.Cells(1).Text & """ runat=""server"" />")

'create a validator control
If validCheckBox.Checked Then
sb.Append(" " & Chr(13) & CreateValidator(_item.Cells(1).Text))
End If

sb.Append("</td>" & Chr(13)) '
sb.Append(" </tr>" & Chr(13)) ' close out the row
End If

Next
sb.Append(" <tr>" & Chr(13)) ' close out the row
sb.Append(" <td colspan=""2""><asp:button id=""button1"" Text=""Validate Form"" runat=""Server"" /></td>" & Chr(13))
sb.Append(" </tr>" & Chr(13)) ' close out the row
sb.Append(" </table>" & Chr(13))
sb.Append(Chr(13) & "</form>")
strOutput = sb.ToString()
strOutput = System.Web.HttpUtility.HtmlEncode(strOutput)
taResults.Value = strOutput
pnlTextarea.Visible = True
End Sub

End Class