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CompareValidator

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11 Oct 2013CPOL 8K   1  
The CompareValidator control compares the value of one control to another, or to an explicit value in the control's ValueToCompare property.

This articles was originally at wiki.asp.net but has now been given a new home on CodeProject. Editing rights for this article has been set at Bronze or above, so please go in and edit and update this article to keep it fresh and relevant.

The CompareValidator control compares the value of one control to another, or to an explicit value in the control's ValueToCompare property. CompareValidator uses three key properties to perform its validation. ControlToValidate and ControlToCompare contain the values to compare. Operator defines the type of comparison to perform, for example, Equal, Not Equal, Greater than, Less than, DataType and others. CompareValidator performs the validation by evaluating these properties as an expression.

The ValueToCompare property can be set dynamically by Javascript if necessary, for example, you can use it with a DropDown list you want to make sure that selected value not equal to -1.

When the type of value being compared is not a string, you have to specify the Type property as one of the following:

  • String
  • Integer
  • Double
  • Date
  • Currency

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This article was originally posted at http://wiki.asp.net/page.aspx/307/comparevalidator

License

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


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