There is an invalid selectedvalue because it is not in the project list.

Source: Internet
Author: User

When you use dropdownlist to bind data, a problem may occur: An invalid selectedvalue is generated because it is not in the project list.

This problem occurs because the selectedvalue value to be bound does not exist in the dropdownlist. Therefore, the system throws an exception:

Exception details:System. argumentoutofrangeexception:"

Dropdownlist1"There is an invalid selectedvalue because it is not in the project list. Parameter Name: Value


Dropdownlist1.selectedindex = dropdownlist1.items. indexof (dropdownlist1.items. findbyvalue ("XXX "));

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