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Posted 25 Dec 2014

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Clearing Controls on Submit

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4.60/5 (3 votes)
25 Dec 2014CPOL
Clearing the controls on Submit


When you have a Inventory/Online Adjustment claims website like I do which takes lot of data from users, you would need some function which clears out all the fields at one go.


I am working on a web application which is more similar to make a claim form electronically. Instead of sending adjustment claim forms with lot of paper work, I am designing a web application which gathers all the fields that are necessary to complete a claim form. At one point of time, I was fed up with clearing the controls after user submits the form on website. Then comes the idea which made me dig more into this and finally brought me to write this tip. I have seen people clearing each control by assigning empty string. So I did some research and finally got this working.

Public Shared Function FlattenHierachy(ByVal root As Control) As Control()
        Dim list As New List(Of Control)()
        If root.HasControls() Then
            For Each control As Control In root.Controls
        End If
        Return list.ToArray()
    End Function

    Private Sub ClearTextBoxes()
        Dim allControls As Control() = FlattenHierachy(Page)
        For Each control As Control In allControls
            Dim textBox As TextBox = TryCast(control, TextBox)
            If textBox IsNot Nothing Then
                textBox.Text = ""
            End If
    End Sub

    Protected Sub ClearDropDowns()
        ddlState.SelectedIndex = -1
        ddlADState.SelectedIndex = -1
        ddlDState.SelectedIndex = -1

    End Sub


This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


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Comments and Discussions

QuestionGeneralized Code Pin
sudevsu31-Dec-14 7:32
Membersudevsu31-Dec-14 7:32 
QuestionCode is generalized Pin
sudevsu30-Dec-14 6:11
Membersudevsu30-Dec-14 6:11 
GeneralMy vote of 4 Pin
jgakenhe25-Dec-14 6:17
professionaljgakenhe25-Dec-14 6:17 
GeneralRe: My vote of 4 Pin
sudevsu28-Dec-14 12:33
Membersudevsu28-Dec-14 12:33 
Suggestioncode-design-optimization Pin
Mr.PoorEnglish25-Dec-14 4:14
MemberMr.PoorEnglish25-Dec-14 4:14 
GeneralRe: code-design-optimization Pin
sudevsu28-Dec-14 12:31
Membersudevsu28-Dec-14 12:31 

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