Vb net datagridview not updating Nz 100 free ameture sex chat
Hi Everyone, I have a form2 that's called from form1, so, I'm triying to store on an array the elements contained in a datagridview on form2, what I have done so far is this: 'Globally declare the Array(as form2 is called from form 1 by pressing a button) Public Array IDEMP() As Integer 'The number of elements contained in the array are undefined as the user will be the one who enter as many rows as he needs Now, on the button_clik Event I have the Following Private Sub Btn Guardar Emps_Click(By Val sender As System. , thanks in advance, best regards, JJGarcia PS: I Need the values from DGV on form 2 to be on 'hold' until the user saves the record on Form1 then, with the ID_Key from Form1 save the elements from Form2(Array). I see in your code you move a value to Array IDEMP(i) but that of course is outside the bounds of the array as we currently can see. Show(My String Array(3)) End Sub John Warner but, in this particular case, the array size depends on as how many records the user enters on the datagridview, as you can see, I kind of try to loop on the datagridview and take the datagridview index as the array index, how will this work? Click Dim valor As Integer For i = 0 To DGVAgregar Emps. Rows(i).cells(0).value Array IDEMP(i) = valor Msg Box(Array IDEMP(i)) Next End Sub So far this is what I have, but at the time I try to execute this it always throws an error message that says the following: "Object reference not set to an instance of an object." Can you guys pls tell me what am I doing wrong?
All your insertions, updates, and deletions will be effected by the single button.
Net: You are trying to use a reference variable who’s value is Nothing/null.
When the value is Nothing/null for the reference variable, that means it is not actually holding a reference to an instance of any object that exists on the heap. Net, you are trying to access a string that has not been initialized. You can’t even compile code like the following in C# Remember, a string is a reference type (a character array) that has to have a value.
Now we’re ready to create our Background Worker object. Updating Form Controls In the Progress Changed event, we get to process our values from our Do Work method.
Notice that we tell it that we want to have it report progress and support cancellation. Here’s the code: In this routine, the progress bar and the listbox are updated with values from the worker thread.