Entity Framework 5 with .NET Framework 4.5 using C# Truncate Table

Question

4.00/5 (1 vote)

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.NET4.5

I am trying to Truncate table before populating it with data. I already have all the tables and can populate it with information. This is how I set up Entity using .edmx Diagram I choose [Update Model From Database ...] then select the table I need and it sets every up for me.

Then in the code I use this:

C#

MyEntities myE = new MyEntities();

SomeEntityTable table = new SomeEntityTable();
table.someFieldName1 = "Value1";
table.someFiledName2 = "Value2";
...

myE.Add(table);
myE.SaveChanges();

Could somebody help me figure out how to add a line before I use this table to truncate all the data in a table prior to running this code. I know I need to get a context then run Truncate Table but not sure how.

Thanks.

Posted 23-Oct-13 8:16am

Code_Observer

Updated 23-Oct-13 8:28am

v4

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3 solutions

Solution 2

Okay here is what I did.

C#

MyEntities myE = new MyEntities();

// This will clear your table and your index will start at 1.
var objCtx = ((System.Data.Entity.Infrastructure.IObjectContextAdapter)myE).ObjectContext;
objCtx.ExecuteStoreCommand("Truncate table SomeEntityTable");
 
SomeEntityTable table = new SomeEntityTable();
table.someFieldName1 = "Value1";
table.someFiledName2 = "Value2";
...
 
myE.Add(table);
myE.SaveChanges();

Posted 23-Oct-13 9:06am

Code_Observer

Comments

Sampath Lokuge 24-Oct-13 1:52am

+5 for put your final code snippet :)

Solution 3

Check this sample application:

Entity Framework for Beginners[^]

Posted 8-Apr-14 0:36am

Code Help 2014

Updated 8-Apr-14 0:46am

v2

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Sampath Lokuge · Accepted Answer · 2013-10-23T08:35:00

You can use below mentioned code for that (this is a sample)

C#

var objCtx = ((System.Data.Entity.Infrastructure.IObjectContextAdapter)dataDb).ObjectContext;
objCtx.ExecuteStoreCommand("TRUNCATE TABLE [Table]");

for more info : Entity Framework. Delete all rows in table

OR

Truncate

I hope this will help to you.