Enable or diable a field on selection of data in dropdown field

Hi, I have to enable or disable a field on the basis of selection of any data in a drop down field.How to do that???I was trying by overriding the modified method on the dropdown field at tha datasource level on the form?

hi Kalpana,

Yes, U have write the code in modified as well as active methods …

Suppose u have in drop down Customer and vendor …

For customer u want to make a field Name as enabled and for vendor Disabled…

Write the following code in active and modified methods…

After super method…

if(table.type == “customer”)

{

Datasourcename_ds.object(fieldnum(table,name)).allowedit(true);

}

else if(table.type = “vendor”)

{

Datasourcename_ds.object(fieldnum(table,name)).allowedit(false);

}