ErrorProvider CodeSample - Errorchecking whole form on a button click

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 This article will have a few sections added to it soon, based on the following article type skeleton: NewCodeSampleTemplate


Overview

This is just a very simple sample on how to use the control. Attaching the error checking to the validation of each textbox control is what is usually prefered as opposed to this case which provides a Button to error check the whole form at the same time. Attaching those error checking to the validation events gives the user more feeling of "online" error checking.

VB.NET Code 

Imports Gizmox.WebGui.Forms
Public Class Form1
 
    Friend WithEvents TextBox1 As Gizmox.WebGui.Forms.TextBox
    Friend WithEvents EP As Gizmox.WebGui.Forms.ErrorProvider
    Friend WithEvents TextBox2 As Gizmox.WebGui.Forms.TextBox
    Friend WithEvents btnSaveButton As Gizmox.WebGui.Forms.Button
 
 
 
 
    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Me.TextBox1 = New Gizmox.WebGui.Forms.TextBox
        Me.EP = New Gizmox.WebGui.Forms.ErrorProvider(Me.components)
        Me.TextBox2 = New Gizmox.WebGui.Forms.TextBox
        Me.btnSaveButton = New Gizmox.WebGui.Forms.Button
 
        Me.TextBox1.Location = New System.Drawing.Point(12, 27)
        Me.TextBox1.Name = "TextBox1"
        Me.TextBox1.Size = New System.Drawing.Size(100, 20)
        Me.TextBox1.TabIndex = 0
 
        Me.EP.BlinkRate = 3
        Me.EP.BlinkStyle = Gizmox.WebGui.Forms.ErrorBlinkStyle.BlinkIfDifferentError
        Me.EP.DataMember = ""
        Me.EP.DataSource = ""
        Me.EP.Icon = Nothing
 
        Me.TextBox2.Location = New System.Drawing.Point(151, 27)
        Me.TextBox2.Name = "TextBox2"
        Me.TextBox2.Size = New System.Drawing.Size(100, 20)
        Me.TextBox2.TabIndex = 1
 
        Me.btnSaveButton.Location = New System.Drawing.Point(273, 24)
        Me.btnSaveButton.Name = "btnSaveButton"
        Me.btnSaveButton.Size = New System.Drawing.Size(75, 23)
        Me.btnSaveButton.TabIndex = 2
        Me.btnSaveButton.Text = "Save"
        AddHandler btnSaveButton.Click, AddressOf btnSaveButton_Click
 
        Me.Controls.Add(Me.btnSaveButton)
        Me.Controls.Add(Me.TextBox2)
        Me.Controls.Add(Me.TextBox1)
    End Sub
 
 
 
 
    Private Sub btnSaveButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
        If AreWeErrorFree() Then
            MessageBox.Show("We are error free!")
        Else
            MessageBox.Show("We have some errors!")
        End If
    End Sub
 
 
 
 
    Private Function AreWeErrorFree() As Boolean
        EP.SetError(TextBox1, "")
        EP.SetError(TextBox2, "")
        If TextBox1.Text = "" Then
            EP.SetError(TextBox1, "You must enter text")
        End If
        If TextBox2.Text = "" Then
            EP.SetError(TextBox2, "You must enter text")
        End If
        Return EP.GetError(TextBox1) = "" And EP.GetError(TextBox2) = ""
    End Function
 
End Class

C# Code

The conversion of this code to C# has not been completed yet.

Please feel free to contribute and add contents to the Wiki

Free conversion of simple code snippets can be found at http://www.developerfusion.com/tools/convert/vb-to-csharp/
Retrieved from "http://wiki.visualwebgui.com/pages/index.php/ErrorProvider_CodeSample_-_Errorchecking_whole_form_on_a_button_click"
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