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Syncfusion Feedback
Platform : ASP.NET
Category : TextBox

Why do i get the error message "Object must implement IConvertible"

(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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