Why we use command executenonquery?

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I study about SQL database connection online, but I don't understand one point. It is "executenonquery();. I don't know why we have to use it

What I have tried:

I don't under why we use it in SQL database connection in c#.

Posted 14-Mar-17 5:21am

Member 13058508

Updated 15-Mar-17 1:42am

CHill60

v2

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Comments

Karthik_Mahalingam 14-Mar-17 11:25am

read this SqlCommand.ExecuteNonQuery Method (System.Data.SqlClient)[^]

[no name] 14-Mar-17 11:26am

When you looked up "ExecuteNonQuery" in the documentation to read about what it did, what exactly was unclear about its functionality?

4 solutions

Solution 3

Probably because :
ExecuteQuery runs a command (like SELECT) that return dataset as answer.
ExecuteNonQuery runs a command (like INSERT or DELETE) that don't.

Posted 14-Mar-17 10:37am

Patrice T

Updated 14-Mar-17 15:01pm

v3

Solution 5

In simple lines, for CRUD operations we use ExecuteNonQuery where we are modifying the DB. And as discussed above, for detailed explanation visit any of the above links mentioned.

Posted 15-Mar-17 1:42am

Prateek Dalbehera

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CHill60 · Accepted Answer · 2017-03-14T05:26:00

Solution 1

ExecuteQuery runs a query.
ExecuteNonQuery runs a command or an update.

See Difference between ExecuteQuery And Execute NonQuery « Code Simplified – Viral Sarvaiya[^]

Posted 14-Mar-17 5:26am

CHill60

Comments

Afzaal Ahmad Zeeshan 14-Mar-17 13:27pm

Simple as that. 5ed.

Graeme_Grant · Accepted Answer · 2017-03-14T05:37:00

Solution 2

ExecuteNonQuery is used when you are not trying to retrieve data from the DB but do other actions like Create, Update, and Delete operations.

Posted 14-Mar-17 5:37am

Graeme_Grant

Comments

Afzaal Ahmad Zeeshan 14-Mar-17 13:27pm

5ed.