Introduction
This
article helps in accessing all the controls on the form (both windows based as
well as web based). Bellow code can be used to clear all textbox or reset all
the dropdown list or this code can be modified as per the requirement.
Using
the code
This
article provides the idea of accessing all the controls on the form. This
simple code snippet can be modified as per the requirement to maximize its
utilization. In the for loop it will pick all the
controls on the form. It will compare if the control is of textbox type then it
till clear it, if the control if dropdownlist, it will reset it. Similarly any
control can be matched any corresponding step can be taken.
Dim __textBoxType As Type = TextBox1.GetType
Dim __DropDown As Type= DropDownList1.GetType
For Each __control As Control In Me.Controls
If __control.GetType() Is __textBoxType Then
CType(__control, TextBox).Clear()
End If
If __control.GetType() Is __DropDown Then
CType(__control, TextBox).SelectedItem=0
End If
Next
Above
I have given two options. Above code will clear all of the textboxes as well as
it will make selected index of all dropdownlist as 0. This code can be used to
reset the data entry form where you may suppose have 15 textbox to clear. These
are just small implementation. You can use this code depending upon your
requirement. For example if you are creating few controls in runtime and you
need to clear them. So instead of writing code for each and every control you
can just loop it and do you work. In the for loop, it will pick each and every
control on the form control array. In a case if we want to modify only one set
of control in a panel, we can run the above loop for all controls in the panels
only.
Points
of Interest
By
writing just few lines we can set any similar property for a similar kind of
control. If will surly decrease the lines of code and also most importantly it
will be optimized code
Conclusion
Hence
we can say that above code can be used when you want do similar function for
all similar kind of controls.
