When I insert multi-records I face identity_cash proplem

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I try to insert multi-records in foreach loop using Entity Framework , first record inserted successfuly , but whet start insert second record an sql exception occured it details say (SqlException: Cannot insert explicit value for identity column in table 'EmployeeVacation' when IDENTITY_INSERT is set to OFF.)

What I have tried:

i try this in sqlserver : SET IDENTITY_INSERT EmployeeVacation ON , but doesn't work

Posted 1-Jan-18 6:49am

Ahmed Dabas

Updated 1-Jan-18 7:45am

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Patrice T 1-Jan-18 13:05pm

Try to show your code.

Dave Kreskowiak 1-Jan-18 13:35pm

Without seeing your code, it's impossible to tell you what you're doing wrong.

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F-ES Sitecore · Accepted Answer · 2018-01-01T07:45:00

You're trying to give a field that has a column marked as an IDENTITY column (usually the table ID) an explicit value which isn't allowed, SQL generates the value automatically. You're probably re-using the entity you've added and are trying to re-add it. When you first create the entity it has no ID but is given one when you add it and if you try and re-add it you'll get this problem. Without seeing the code it's impossible to say what the fix is but you're probably doing this;

var e = new MyEntity();
foreach (var i in col)
{
    e.Property = i.Property;
    db.MyTables.Add(e);
}

you need to do this

foreach (var i in col)
{
    var e = new MyEntity();
    e.Property = i.Property;
    db.MyTables.Add(e);
}