How do you validate user control?
How do you validate user control?
2 Answers
- Put the validator inside the UserControl. It can access the ID of the data entry control.
- Use a CustomValidator. Do not use its ControlToValidate property.
- Its possible to use the ValidationPropertyAttribute. You need to add a property to your usercontrol that returns a string value of the data.
What is a validation controls?
Validation controls are used to, Implement presentation logic. To validate user input data. Data format, data type and data range is used for validation.
What is the purpose of ControlToValidate property?
Remarks. Use the ControlToValidate property to specify the input control to validate. This property must be set to the ID of an input control for all validation controls except the CustomValidator control, which can be left blank.
Which validator control is used to check the input expression?
The RegularExpressionValidator allows validating the input text by matching against a pattern of a regular expression.
How does server side validation work?
Server-side validation occurs on the server after the data has been submitted. Server-side code is used to validate the data before the data is saved in the database or otherwise used by the application. If the data fails validation, a response is sent back to the client with corrections that the user needs to make.
How many types of validation control are there?
There are 6 types of validation controls available : RequiredFieldValidator. CompareValidator. RangeValidator.
What is the difference between user control and custom control?
The main difference between Custom Control and User Control is that they inherit from different levels in the inheritance tree . A Custom Control generally inherits from the System. Windows. A UserControl inherits from the System.
What is range validator control explain with example?
The RangeValidator control is used to check that the user enters an input value that falls between two values. It is possible to check ranges within numbers, dates, and characters. Note: The validation will not fail if the input control is empty. Use the RequiredFieldValidator control to make the field required.
Which validator control you use if you need to make sure the values in two different controls matched?
Which validator control you use if you need to make sure the values in two different controls matched? Compare Validator control.
What data types do a range validator supports?
Answer: The RangeValidator control supports Integer,String and Date.
What is difference between server side validation and client-side validation?
Server side validation is mainly used to validate and display form level errors, while client side validation is used for field level errors. Client side validation depends on javascript and may be turned off in some browser, which can lead to invalid data saved, while server side validation is very secure.
How do I use the controltovalidate property?
Use the ControlToValidate property to specify the input control to validate. This property must be set to the ID of an input control for all validation controls except the CustomValidator control, which can be left blank. If you do not specify a valid input control, an exception will be thrown when the page is rendered.
What is the use of controltovalidate and errormessage?
ControlToValidate – This value is which control the validator is applied to. ErrorMessage – This is the error message that will be displayed in the validation summary. In this section, we will start our trip to use the Validation controls at the client side.
What is validation control in ASP NET?
ASP.NET Validation control is a series of controls which can help us to validate the user input and prevent the malicious data from being posted to the server easily. And according to the browser’s security limit, the ASP.NET Validation control provides two ways of validation: Server Side and Client Side.
What is the difference between customvalidator and requiredfieldvalidator?
All validation controls, except the RequiredFieldValidator control, will pass validation if the input control specified by the ControlToValidate property contains no text. If you are using a CustomValidator control, the client-side and server-side validation functions are not called either.
