I'm trying to show a message to the user if the requested website does not open (or the internet is not working). The message I want to show is
"Site is not working. Please contact the administrator."
How can I do this? Here's what I have
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
WebBrowser1.Navigate("google.com")
Dim connectn As Boolean
If connectn = False Then
MsgBox("site not working please contact the developer")
End If
End Sub
Private Sub Back_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Back.Click
WebBrowser1.GoBack()
End Sub
Private Sub Forward_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Forward.Click
WebBrowser1.GoForward()
End Sub
Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
WebBrowser1.Stop()
End Sub
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
End Sub
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
WebBrowser1.GoHome()
End Sub
Private Sub Button5_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button5.Click
WebBrowser1.Refresh()
End Sub
Private Sub WebBrowser1_DocumentCompleted(ByVal sender As System.Object, ByVal e As System.Windows.Forms.WebBrowserDocumentCompletedEventArgs)
End Sub
Private Sub Label1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Label1.Click
End Sub
Private Sub Label2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Label2.Click
End Sub
Private Sub CloseToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles CloseToolStripMenuItem.Click
Application.Exit()
End Sub
Private Sub DateTimePicker1_ValueChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles DateTimePicker1.ValueChanged
End Sub
Private Sub WebBrowser1_DocumentCompleted_1(ByVal sender As System.Object, ByVal e As System.Windows.Forms.WebBrowserDocumentCompletedEventArgs) Handles WebBrowser1.DocumentCompleted
End Sub
End Class
It's best not to use the DocumentCompleted event handler as it will fire when a frame is complete, not necessarily the entire webpage. Instead use the following:
With WebBrowser1
.Navigate("google.com")
Do Until Not (.IsBusy)
Application.DoEvents()
Loop
Do Until .ReadyState = WebBrowserReadyState.Complete
Application.DoEvents()
Loop
End With
Other than that, if it is for a specific site you can find what the correct URL is and simply compare the "endstate" URL when the Webbrowser has completely loaded. If you want it to be generalized for any website you can find most information from this link about page event handling for navigation errors.
Related
How can I change the mausehover event of all TextBox
Private Sub TextBox1_MouseHover(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TextBox1.MouseHover
ToolTip1.SetToolTip(TextBox1, TextBox1.Text)
End Sub
Private Sub TextBox2_MouseHover(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TextBox2.MouseHover
ToolTip1.SetToolTip(TextBox2, TextBo2.Text)
End Sub
Private Sub TextBox3_MouseHover(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TextBox3.MouseHover
ToolTip1.SetToolTip(TextBox3, TextBox3.Text)
End Sub
How can I add code to the all textbox mousehover event in the shortest way
Thanks.
Here's a way to do it :
Private Sub TextBox_MouseHover(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TextBox1.MouseHover, TextBox2.MouseHover, TextBox3.MouseHover
Dim tbx = DirectCast(sender, TextBox)
ToolTip1.SetToolTip(tbx, tbx.Text)
End Sub
I've added a delete button to delete data from DataGridView and it deletes right away but I wanted to ask if you would like to delete before it deletes. How do I add this function to this button?
This is my code so far:
Private Sub Table_RKMBindingNavigatorSaveItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
Me.Validate()
Me.Table_RKMBindingSource.EndEdit()
Me.TableAdapterManager.UpdateAll(Me.RKM_System_dataDataSet)
End Sub
Private Sub Management_Window_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'TODO: This line of code loads data into the 'RKM_System_dataDataSet.Table_RKM' table. You can move, or remove it, as needed.
Me.Table_RKMTableAdapter.Fill(Me.RKM_System_dataDataSet.Table_RKM)
End Sub
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Table_RKMBindingSource.AddNew()
End Sub
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Table_RKMBindingSource.EndEdit()
Table_RKMTableAdapter.Update(Me.RKM_System_dataDataSet.Table_RKM)
End Sub
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
Table_RKMBindingSource.RemoveCurrent()
End Sub
Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click
Table_RKMBindingSource.EndEdit()
Search_Window.Show()
Table_RKMTableAdapter.Update(Me.RKM_System_dataDataSet.Table_RKM)
Me.Close()
End Sub
Private Sub Button5_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button5.Click
Me.WindowState = FormWindowState.Minimized
End Sub
Private Sub Table_RKMDataGridView_CellContentClick(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles Table_RKMDataGridView.CellContentClick
End Sub
Thank you.
You can use a message box:
On your Button3_Click event add the following code:
Dim answer as Integer
answer = MessageBox.Show("Your Message", "Your title", MessageBoxButtons.YesNo, MessageBoxIcon.Warning)
If not answer = 6 then Table_RKMBindingSource.RemoveCurrent()
That should work :)
I'm trying to implement a simple web browser in Visual Studio 2013 using VB.Net. However, when I run the application, only the GO button works, and none of the other functions are firing, except for the Form1_Load function. Please help me.
Here is my code:
Public Class Form1
Dim int As Integer = 0
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
WebBrowser1.Navigate("www.google.com")
End Sub
Private Sub TextBox1_KeyDown(sender As Object, e As KeyEventArgs)
If e.KeyCode = Keys.Enter Then
WebBrowser1.Navigate(TextBox1.Text)
End If
End Sub
Private Sub Button9_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
WebBrowser1.ShowPropertiesDialog()
End Sub
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
WebBrowser1.GoBack()
End Sub
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
WebBrowser1.GoForward()
End Sub
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
WebBrowser1.Refresh()
End Sub
Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
WebBrowser1.Stop()
End Sub
Private Sub Button5_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
WebBrowser1.Navigate("www.google.com")
End Sub
Private Sub Button6_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button6.Click
WebBrowser1.Navigate(TextBox1.Text)
End Sub
Private Sub Button7_Click(sender As Object, e As EventArgs) Handles Button7.Click
End Sub
Private Sub Button8_Click(sender As Object, e As EventArgs) Handles Button8.Click
End Sub
End Class
You need to add the Handles Button1.Click, Handles Button2.Click, etc to each sub
I'm using Visual Basic 2008. I went to publish my project, and I got two "Expression expected" errors. I am very new to Visual Basic - I just started last night. The code:
Public Class Form1
Private Sub WebBrowser1_DocumentCompleted(ByVal sender As System.Object, ByVal e As System.Windows.Forms.WebBrowserDocumentCompletedEventArgs)
WebBrowser1.Navigate("www.zudostudios.com")
End Sub
Private Sub GoBtn1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
WebBrowser1.Navigate(addressTxt.Text)
End Sub
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
End Sub
Private Sub TextBox1_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles addressTxt.TextChanged
End Sub
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
TextBox1_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles addressTxt.TextChanged
End Sub
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
End Sub
Private Sub Button3_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
WebBrowser1.Navigate("www.zudostudios.com")
End Sub
Private Sub Label1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Label1.Click
End Sub
End Class
It's a copy paste mistake.
You have implemented the following code.
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
TextBox1_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles addressTxt.TextChanged
End Sub
But when calling to a method TextBox1_TextChanged the Handles addressTxt.TextChanged is useless.
Correct code should be:
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
TextBox1_TextChanged(sender, e)
End Sub
Hi I have the following form but cant figureout why its upbrubtly terminiating when difrent buttons are clicked?
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
End Sub
Private Sub button1_MouseEnter(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.MouseEnter
Dim TEST1 As Integer = System.IO.Directory.GetFiles("C:\test\test").Length
If TEST1 = 0 Then
Me.WebBrowser1.Navigate("http://www.hotmail.com")
End If
End Sub
Private Sub button1_MouseLeave(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.MouseLeave
Me.WebBrowser1.Navigate("http://WWW.facebook.com")
End Sub
Private Sub button2_MouseLeave(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.MouseLeave
Me.WebBrowser1.Navigate("http://WWW.facebook.com")
End Sub
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Me.WebBrowser1.Navigate("file://C:\test\test")
Button1.Enabled = False
Button2.Enabled = True
End Sub
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Me.WebBrowser1.Navigate("file://C:\test")
Button2.Enabled = False
Button1.Enabled = True
End Sub
Private Sub button2_MouseEnter(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.MouseEnter
Dim TEST2 As Integer = System.IO.Directory.GetFiles("C:\test\test").Length
If TEST2 = 0 Then
Me.WebBrowser1.Navigate("http://www.hotmail.com")
End If
End Sub
The terms face book and hotmail are just random to keep company site private :)
I suspect the Mouse_Enter event and the Mouse_Leave events are not giving time to the webbrowser to fully load the document and maybe it is internally crashing.
Try checking if the webbrowser has finished working before navigating again and tell us:
Use
If WebBrowser1.ReadyState = WebBrowserReadyState.Complete
Me.WebBrowser1.Navigate("http://www.google.com")
End if