Asp.net 6 control verification methods

1. required verification control requiredfieldvalidator

Syntax Rules: <asp Tutorial: requiredfieldvalidator

Id = "identifier"

Runat = "server"
Controltovalidate = "control identifier to be verified"

Errormessage = "error message">

</Asp: requiredfieldvalidator>

This control often verifies textbox, and is blank in response.

2. Range verification control rangevalidator

Syntax rule: <asp: rangevalidator

Id = "identifier"

Runat = "server"

Controltovalidate = "control identifier to be verified"
Errormessage = "error message"

Maximumvalue = "maximum"

Minimumvalue = "minimum"

Type = "compare value type">

</Asp: rangevalidator>

This control is often used to verify that the age and so on represent a range. Note that if no information is entered, the range-eye verification control will not perform verification.

3. Regular Expression verification control

Syntax Rules: <asp: regularexpressionvalidator

Id = "identifier"

Runat = "server"
Controltovalidate = "control identifier to be verified"

Errormessage = "error message"
Validationexpression = "Regular Expression">

</Asp: regularexpressionvalidator>

This control uses regular expressions for verification. The rules for regular expressions are complex. Next time I will write an article about this control. Common regular expressions are provided in vs2008.

4. Comparison and verification controls

Syntax Rules: <asp: comparevalidator

Id = "identifier"

Runat = "server"
Controltocompare = "control identifier to be compared"

Controltovalidate = "control identifier to be verified"

Errormessage = "error message"

Opterater = "comparison type">

</Asp: comparevalidator>

This control is used to compare whether the two passwords are the same.

5. Custom verification controls

Syntax rule: <asp: customvalidator

Id = "identifier"

Runat = "server"
Controltovalidate = "control identifier to be verified"

Errormessage = "error message"
Onservervalidate = "Verification Method">

</Asp: customvalidator>

This control is used to customize the methods to be verified.

6. Verify the total number of controls

Syntax Rules: <asp: validationsummary

Id = "identifier"

Runat = "server"
Displaymode = "display mode"

Headertext = "title"

Showmessagebox = "true/false" whether to bring up a window/>

This control aggregates error messages when many verification controls exist.

In the asp.net tutorial, there are six types of verification controls: mandatory verification controls, range verification controls, regular expression verification controls, comparison verification controls, user-defined verification controls, and total verification controls.