Question about validation parameter in the filter

hello i'm new radzen, i want to know, how to validate this parameters if already exist the data is sq

some condition that normal using like where in sql server

You have to set a new property GetIdAppResult after invoke


you can now use getIdAppResult.Count() >0 to check if data already exists

my question is when input some data in the textbox and click submit, validate is exist in current data in the table

this is my main screen

thanks

Capture3

Looks like your code already does that. You just need to add a test for the number of rows returned and if not 1 display an error and prevent the call to navigate to etc.

already hv data in the table only i need to validate the input in textbox exist the information
Capture4

You need to use a custom method
Check this link

thanks, already read and i did it, it's working the validation.