CODEWITHSUNDEEP
asp.net.netvb.netvisual-studio-2010
Joshua
Joshua

Reputation: 2295

check whether a textbox value changed in .net

I am using the following code to check whether the textbox value is changed. The text box value is initially retrieved from the database in a button click event.

Requirement: I want to update another object(objTest2) property if the tbOffienotes textbox is changed. Further, I want to get only the newly entered text from the text box.

If Not tbOfficeNotes.Text.Equals(objTest.OfficeNotes) Then
        Dim strComment As String = tbOfficeNotes.Text.Remove
                                            (0, objTest.OfficeNotes.Length) 
        'Save the test2 object
        objTest2.Comment=strComment

End If

Upvotes: 2

Views: 4721

Answers (2)

nunespascal
nunespascal

Reputation: 17724

Subscribe to the TextChanged event of the textbox. This will be raised when the value changes. You will get the newly entered value in the Text property of the textbox

Protected Sub tbOfficeNotes_TextChanged(ByVal sender As Object, _
        ByVal e As System.EventArgs) Handles tbOfficeNotes.TextChanged
     Dim strComment As String = tbOfficeNotes.Text
End Sub

Upvotes: 3

Mayank Pathak
Mayank Pathak

Reputation: 3681

Why don't you store initial value in some control i.e HiddenField and compare with current value...if changed then do your operation...

Upvotes: 2

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