Check Record Exists Before Insert Using C# Linq | Violation Primary Key | ProgrammingGeek

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We are inserting record one by one in SQL server database using windows form application. Some time we attempt to insert duplicate record wrongly. it will prevent insert duplicate record in c#.
In that case we can set a message as warning while we try to insert duplicate record. In this tutorial you can learn how to check record exists before performing insert operation in c# windows form application using linq to sql step by step. If the record exists in SQL Database, you can see a message that "Can not insert duplicate record. See bellow". Then user can easily understand that what record he want to insert, It's available in his database. and he can check the record in the existing list below datagridview.

After watching this full tutorial you can learn How to check if record Exists in SQL server database table using linq c# before insert.

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#CheckRecordExistsBeforeInsertLinq ##CheckRecordExistsUsingLinq #ViolationPrimaryKey

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Nice video 😌😌. It's working fine. Your explanation is very good. please upload using Conn

aminaali

Hi nice guide for linq, Your explanation is very easy to understand.
How about if I want to check if 2 or more fields are the same in the record before inserting?
example product ID and Item name.

roan

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