Entity Framework Code-First Execute Scalar-Valued Functions

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C#

Please guide how to convert the below code to corresponding entity framework code [considering     dbempEntities obj = new dbempEntities ();]

            SqlConnection con = new SqlConnection("Data Source=111.178.0.113;Initial Catalog=test;Uid=test;Pwd=111;");
            SqlCommand cmd = new SqlCommand("Select Count(*) from tblemptemp where Name='" + tm.Name + "'", con);
            con.Open();
            object result = cmd.ExecuteScalar();
            con.Close();
            if (result != null)
            {
                IsEmployeeExists = Convert.ToInt32(result.ToString()) > 0;
            }

Posted 4-Dec-15 21:04pm

Member 12187359

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Suvendu Shekhar Giri 5-Dec-15 7:34am

.. and what is your question?
Are you getting any error?

Note: Never post sensitive data over web like UserId, Password etc.

Anisuzzaman Sumon 8-Dec-15 6:45am

You may use LINQ instead of

F-ES Sitecore 9-Dec-15 10:43am

You can find various ways of doing this here

https://social.msdn.microsoft.com/Forums/en-US/2e0bea39-34b3-4142-b274-ccd1f50f72be/how-to-write-lamda-to-generate-sql-statement-like-select-count-from-students-in-entity?forum=adodotnetentityframework

Richard Deeming 9-Dec-15 11:01am

Your code is vulnerable to SQL Injection[^].

NEVER use string concatenation to build a SQL query. ALWAYS use a parameterized query.

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Anisuzzaman Sumon · Answer 1 · 2015-12-09T04:27:00

Equvalent linq code of "SELECT COUNT(*) FROM ToDos WHERE Name='ABC'" will be
considering

C#

dbempEntities obj = new dbempEntities ();

C#

var count = (from todo in obj.ToDos
                         where todo.Name=="ABC"
                         select obj.ToDos.AsEnumerable()
                       
                      ).Count();

here ToDos is my table name contained by entities yours 'tblemptemp'