Aspnet (vb.net)

[ursolouco]

Brothers!!!!

Field not found: ?.GdiplusInvalidRectangle.

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Exception Details:

System.MissingFieldException: Field not found: ?.GdiplusInvalidRectangle.

Stack Trace:

[MissingFieldException: Field not found: ?.GdiplusInvalidRectangle.]

  System.Drawing.Color.op_Equality(Color left, Color right) +0

  System.Drawing.ColorTranslator.ToHtml(Color c)

  System.Web.UI.WebControls.Style.AddAttributesToRender(HtmlTextWriter writer, WebControl owner)

  System.Web.UI.WebControls.WebControl.AddAttributesToRender(HtmlTextWriter writer)

  System.Web.UI.WebControls.WebControl.RenderBeginTag(HtmlTextWriter writer)

  System.Web.UI.WebControls.WebControl.Render(HtmlTextWriter writer)

  System.Web.UI.Control.RenderControl(HtmlTextWriter writer)

  System.Web.UI.Control.RenderChildren(HtmlTextWriter writer)

  System.Web.UI.HtmlControls.HtmlForm.RenderChildren(HtmlTextWriter writer)

  System.Web.UI.HtmlControls.HtmlContainerControl.Render(HtmlTextWriter writer)

  System.Web.UI.HtmlControls.HtmlForm.Render(HtmlTextWriter output)

  System.Web.UI.Control.RenderControl(HtmlTextWriter writer)

  System.Web.UI.Control.RenderChildren(HtmlTextWriter writer)

  System.Web.UI.Control.Render(HtmlTextWriter writer)

  System.Web.UI.Control.RenderControl(HtmlTextWriter writer)

  System.Web.UI.Page.ProcessRequestMain()

Index.aspx.vb

Imports System
Imports System.Data
Imports System.Data.OleDb

Public Class WebForm1
    Inherits System.Web.UI.Page

#Region " Web Form Designer Generated Code "

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

    End Sub
    Protected WithEvents frmCatId As System.Web.UI.WebControls.DropDownList
    Protected WithEvents Button1 As System.Web.UI.WebControls.Button
    Protected WithEvents frmitemName As System.Web.UI.WebControls.TextBox
    Protected WithEvents frmitemText As System.Web.UI.WebControls.TextBox
    Protected WithEvents Label1 As System.Web.UI.WebControls.Label

    'NOTE: The following placeholder declaration is required by the Web Form Designer.
    'Do not delete or move it.
    Private designerPlaceholderDeclaration As System.Object

    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

    Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        'Put user code to initialize the page here

        Dim strConn As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & Server.MapPath("Northwind.mdb") & ";"
        Dim MySQL As String = "SELECT CódigoDaCategoria, NomeDaCategoria FROM Categorias Order by CódigoDaCategoria"
        Dim MyConn As New OleDbConnection(strConn)
        Dim objDR As OleDbDataReader
        Dim Cmd As New OleDbCommand(MySQL, MyConn)

        MyConn.Open()

        objDR = Cmd.ExecuteReader(System.Data.CommandBehavior.CloseConnection)

        frmCatId.DataTextField = "NomeDaCategoria"
        frmCatId.DataValueField = "CódigoDaCategoria"
        frmCatId.DataSource = objDR
        frmCatId.DataBind()

        MyConn.Close()

    End Sub

    Sub doInsert()

        Dim strConn As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & Server.MapPath("Northwind.mdb") & ";"
        Dim mySQL As String = "INSERT INTO Produtos(NomeDoProduto, QuantidadePorUnidade, CódigoDaCategoria) VALUES (@Nome, @Quantidade, @Codigo)"
        Dim mySQL2 As String = "SELECT MAX (CódigoDoProduto) FROM Produtos"
        Dim Conn As New OleDbConnection(strConn)
        Dim Cmd As New OleDbCommand(mySQL, Conn)
        Dim Cmd2 As New OleDbCommand(mySQL2, Conn)

        With Cmd.Parameters
            .Add(New OleDbParameter("@Nome", frmitemName.Text))
            .Add(New OleDbParameter("@Quantidade", frmitemText.Text))
            .Add(New OleDbParameter("@Codigo", frmCatId.SelectedItem.Value))
        End With

        Conn.Open()

        Cmd.ExecuteNonQuery()

        Label1.Text = "Os dados foram cadastrados com sucesso!"
        Label1.Text = "<p>O Código do ultimo produto incluido é igual a =" & Cmd2.ExecuteScalar

        Conn.Close()

    End Sub

    Private Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
        doInsert()

    End Sub
End Class

alguém saberia me dizer porque deu este tipo de erro ? Foi logo após eu inserir o Label1 no webform que começou apresentar este tipo de erro.

Valeu Galera!!

Abraços e Boa Programação!!

[ursolouco]

Descobrir!!

Devido a uma enorme formatação que fiz no Label, deu pau na biblioteca GDI, subtitui o mesmo por um simples (padrão VS.Net) e funfou na boa.

Não sei se é a resposta para este tipo de problema, mas neste caso, funcionou na boa.

Abraços e Feche o Tópico por favor!!!

[cyberalexxx]

Salve, salve, Grande Urso, tenho que tomar vergonha e partir para a plataforma .NET, ninguém sabe como sera o futuro né!! e to percebendo que as duvidas em .NET não são muitos discutidas, sinal de q deve ter mercado a ser explorado.

T +

to fechando do tópico