"ef core set identity_insert off" Code Answer's
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ef core set identity_insert off
#region IDENTITY_INSERT
public static void EnableIdentityInsert<T>(this DbContext context) => SetIdentityInsert<T>(context, true);
public static void DisableIdentityInsert<T>(this DbContext context) => SetIdentityInsert<T>(context, false);
private static void SetIdentityInsert<T>([NotNull] DbContext context, bool enable)
{
if (context == null) throw new ArgumentNullException(nameof(context));
var entityType = context.Model.FindEntityType(typeof(T));
var value = enable ? "ON" : "OFF";
context.Database.ExecuteSqlRaw($"SET IDENTITY_INSERT {entityType.GetSchema()}.{entityType.GetTableName()} {value}");
}
public static void SaveChangesWithIdentityInsert<T>([NotNull] this DbContext context)
{
if (context == null) throw new ArgumentNullException(nameof(context));
using var transaction = context.Database.BeginTransaction();
context.EnableIdentityInsert<T>();
context.SaveChanges();
context.DisableIdentityInsert<T>();
transaction.Commit();
}
#endregion
#region IDENTITY_INSERT ASYNC
public static async Task EnableIdentityInsertAsync<T>(this DbContext context) => await SetIdentityInsertAsync<T>(context, true);
public static async Task DisableIdentityInsertAsync<T>(this DbContext context) => await SetIdentityInsertAsync<T>(context, false);
private static async Task SetIdentityInsertAsync<T>([NotNull] DbContext context, bool enable)
{
if (context == null) throw new ArgumentNullException(nameof(context));
var entityType = context.Model.FindEntityType(typeof(T));
var value = enable ? "ON" : "OFF";
await context.Database.ExecuteSqlRawAsync($"SET IDENTITY_INSERT {entityType.GetSchema()}.{entityType.GetTableName()} {value}");
}
public static async Task SaveChangesWithIdentityInsertAsync<T>([NotNull] this DbContext context)
{
if (context == null) throw new ArgumentNullException(nameof(context));
await using var transaction = await context.Database.BeginTransactionAsync();
await context.EnableIdentityInsertAsync<T>();
await context.SaveChangesAsync();
await context.EnableIdentityInsertAsync<T>();
await transaction.CommitAsync();
}
#endregion
Source: stackoverflow.com
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