Linq to Sql: How to quickly clear a table

Svish_39321 0
Viewed 92238

To delete all the rows in a table, I am currently doing the following:

context.Entities.DeleteAllOnSubmit(context.Entities);
context.SubmitChanges();

However, this seems to be taking ages. Is there a faster way?

delete-row linq-to-sql c#
5 Answers

you could also use this:

Public void BorraFilasTabla()
{
 using(basededatos db = new basededatos())
 {
  var ListaParaBorrar = db.Tabla.Tolist();
  db.Tabla.RemoveRange(ListaParaBorrar); 
 }
}
user_139006190

The Below c# code is used to Insert/Update/Delete/DeleteAll on a database table using LINQ to SQL

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;

namespace PracticeApp
{
    class PracticeApp
    {        
        public void InsertRecord(string Name, string Dept) {
            LinqToSQLDataContext LTDT = new LinqToSQLDataContext();
            LINQTOSQL0 L0 = new LINQTOSQL0 { NAME = Name, DEPARTMENT = Dept };
            LTDT.LINQTOSQL0s.InsertOnSubmit(L0);
            LTDT.SubmitChanges();
        }

        public void UpdateRecord(int ID, string Name, string Dept)
        {
            LinqToSQLDataContext LTDT = new LinqToSQLDataContext();
            LINQTOSQL0 L0 = (from item in LTDT.LINQTOSQL0s where item.ID == ID select item).FirstOrDefault();
            L0.NAME = Name;
            L0.DEPARTMENT = Dept;
            LTDT.SubmitChanges();
        }

        public void DeleteRecord(int ID)
        {
            LinqToSQLDataContext LTDT = new LinqToSQLDataContext();
            LINQTOSQL0 L0;
            if (ID != 0)
            {
                L0 = (from item in LTDT.LINQTOSQL0s where item.ID == ID select item).FirstOrDefault();
                LTDT.LINQTOSQL0s.DeleteOnSubmit(L0);
            }
            else
            {
                IEnumerable<LINQTOSQL0> Data = from item in LTDT.LINQTOSQL0s where item.ID !=0 select item;
                LTDT.LINQTOSQL0s.DeleteAllOnSubmit(Data);
            }           
            LTDT.SubmitChanges();
        }

        static void Main(string[] args) {
            Console.Write("* Enter Comma Separated Values to Insert Records\n* To Delete a Record Enter 'Delete' or To Update the Record Enter 'Update' Then Enter the Values\n* Dont Pass ID While Inserting Record.\n* To Delete All Records Pass 0 as Parameter for Delete.\n");
            var message = "Successfully Completed";
            try
            {
                PracticeApp pa = new PracticeApp();
                var enteredValue = Console.ReadLine();                
                if (Regex.Split(enteredValue, ",")[0] == "Delete") 
                {
                    Console.Write("Delete Operation in Progress...\n");
                    pa.DeleteRecord(Int32.Parse(Regex.Split(enteredValue, ",")[1]));
                }
                else if (Regex.Split(enteredValue, ",")[0] == "Update")
                {
                    Console.Write("Update Operation in Progress...\n");
                    pa.UpdateRecord(Int32.Parse(Regex.Split(enteredValue, ",")[1]), Regex.Split(enteredValue, ",")[2], Regex.Split(enteredValue, ",")[3]);
                }
                else
                {
                    Console.Write("Insert Operation in Progress...\n");
                    pa.InsertRecord(Regex.Split(enteredValue, ",")[0], Regex.Split(enteredValue, ",")[1]);
                }                                
            }
            catch (Exception ex)
            {
                message = ex.ToString();
            }
            Console.Write(message);            
            Console.ReadLine();                        
        }
    }
}
Admin1
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