SqlBulkCopy.BulkCopyTimeout Property


Number of seconds for the operation to complete before it times out.

Namespace:   System.Data.SqlClient
Assembly:  System.Data (in System.Data.dll)

public int BulkCopyTimeout { get; set; }

Property Value

Type: System.Int32

The integer value of the BulkCopyTimeout property. The default is 30 seconds. A value of 0 indicates no limit; the bulk copy will wait indefinitely.

If the operation does time out, the transaction is not committed and all copied rows are removed from the destination table.

The following console application demonstrates how to modify the time-out to 60 seconds when bulk loading data.

In this example, the source data is first read from a SQL Server table to a SqlDataReader instance. The source data does not have to be located on SQL Server; you can use any data source that can be read to an IDataReader or loaded to a DataTable.


This sample will not run unless you have created the work tables as described in Bulk Copy Example Setup. This code is provided to demonstrate the syntax for using SqlBulkCopy only. If the source and destination tables are in the same SQL Server instance, it is easier and faster to use a Transact-SQLINSERT … SELECT statement to copy the data.

using System.Data.SqlClient;

class Program
    static void Main()
        string connectionString = GetConnectionString();

        // Open a sourceConnection to the AdventureWorks database.
        using (SqlConnection sourceConnection =
                   new SqlConnection(connectionString))

            // Perform an initial count on the destination table.
            SqlCommand commandRowCount = new SqlCommand(
                "SELECT COUNT(*) FROM " +
            long countStart = System.Convert.ToInt32(
            Console.WriteLine("Starting row count = {0}", countStart);

            // Get data from the source table as a SqlDataReader.
            SqlCommand commandSourceData = new SqlCommand(
                "SELECT ProductID, Name, " +
                "ProductNumber " +
                "FROM Production.Product;", sourceConnection);
            SqlDataReader reader =

            // Create the SqlBulkCopy object using a connection string. 
            // In the real world you would not use SqlBulkCopy to move
            // data from one table to the other in the same database.
            using (SqlBulkCopy bulkCopy = new SqlBulkCopy(connectionString))
                bulkCopy.DestinationTableName =

                // Set the timeout.
                bulkCopy.BulkCopyTimeout = 60;

                    // Write from the source to the destination.
                catch (Exception ex)
                    // Close the SqlDataReader. The SqlBulkCopy
                    // object is automatically closed at the end
                    // of the using block.

            // Perform a final count on the destination 
            // table to see how many rows were added.
            long countEnd = System.Convert.ToInt32(
            Console.WriteLine("Ending row count = {0}", countEnd);
            Console.WriteLine("{0} rows were added.", countEnd - countStart);
            Console.WriteLine("Press Enter to finish.");

    private static string GetConnectionString()
        // To avoid storing the sourceConnection string in your code, 
        // you can retrieve it from a configuration file. 
        return "Data Source=(local); " +
            " Integrated Security=true;" +
            "Initial Catalog=AdventureWorks;";

.NET Framework
Available since 2.0
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