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Why do i get the error message ‘Object must implement IConvertible’

Platform: ASP.NET| Category: TextBox

(I don’t understand ‘tyring to insert/update data’, ‘webcontrol is not associated with it’s property’!)
if you write code using parametrized query as
paramxxx.value = textbox1
it’ll show above error
to resolve it it should be
paramxxx.value =textbox1.text

//This kind of error message can occur when you are trying to insert/update data or any kind of operation which involves textbox/dropdownlist
The issue occurs if the webcontrol is not associated with its property

May be you have not associated the appropriate property of the control
i.e textBox1.Text
or dropdownlist1.SelectedItem.Value

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