problem solved
hello back Mr. Imar
after changing the types of the fields from (varchar , text) into (nvarchar . ntext) in the database ,, I also changed the same types again the app code folder ,, in the dbml file ,, that has the link diagram ,, and from the properties of the server data type ,, I changed the type too ,, and it worked great ,,,
thnx for all the help man (شكرا جزيلا) ,, blessings
Areej
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