利用SqlBulkCopy批量添加DataTable入SQL Server

 引用

using System.Data.SqlClient;
using System.Data.OleDb;

获取Excel一个工作表数据

public static DataTable GetDataTableFromExcel(string SourceFilePath)
        {
            string ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;" +
                                        "Data Source=" + SourceFilePath + ";" +
                                        "Extended Properties=Excel 8.0;";

            using (OleDbConnection cn = new OleDbConnection(ConnectionString))
            {
                cn.Open();

                DataTable dbSchema = cn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);
                if (dbSchema == null || dbSchema.Rows.Count < 1)
                {
                    throw new Exception("Error: Could not determine the name of the first worksheet.");
                }
                //修改此处可遍历Excel表格中各个工作表
                string WorkSheetName = dbSchema.Rows[0]["TABLE_NAME"].ToString();

                OleDbDataAdapter da = new OleDbDataAdapter("SELECT * FROM [" + WorkSheetName + "]", cn);
                DataTable dt = new DataTable(WorkSheetName);

                da.Fill(dt);

                return dt;
            }
        }

导入DataTable到SQL Server

private void simpleButton2_Click(object sender, EventArgs e)
        {
            DataTable dt = new DataTable();
            if (openFileDialog1.ShowDialog() == DialogResult.OK)
            {
                dt=GetDataTableFromExcel(openFileDialog1.FileName);
            }
            DataTable dtTarget = new DataTable();
            dtTarget.Columns.Add("ID", typeof(string));
            dtTarget.Columns.Add("Number", typeof(string));
            dtTarget.Columns.Add("Name", typeof(string));
            dtTarget.Columns.Add("SpecialJob_ID", typeof(string));
            dtTarget.Columns.Add("Price", typeof(float));
            dtTarget.Columns.Add("SessionTime", typeof(string));
            dtTarget.Columns.Add("LabourCount", typeof(float));
            dtTarget.Columns.Add("Department_ID", typeof(string));
            //构建与目标表列数量和数据类型相同的DataTable
            foreach (DataRow dr in dt.Rows)
            {
                if (Convert.ToString(dr[0]) == "") break;
                DataRow drnew = dtTarget.NewRow();
                drnew[0] = System.Guid.NewGuid().ToString();
                drnew[1] = Convert.ToString(dr[4]).Trim().Replace(" ", "");
                drnew[2] = dr[0];
                drnew[4] = Convert.ToDouble(dr["单价"]);
                drnew[5] = dr[1];
                drnew[6] = Convert.ToDouble(dr["用工"]);
                drnew[7] = "201208111111356afb5fc8-9cb5-405c-926f-07cc94b39d49";
                dtTarget.Rows.Add(drnew);
            }

            using (SqlConnection destinationConnection = new SqlConnection(SQLServerHelper.ConnectionString))
            {
                destinationConnection.Open();

                // Set up the bulk copy object.  
                // Note that the column positions in the source 
                // data reader match the column positions in  
                // the destination table so there is no need to 
                // map columns. 
                using (SqlBulkCopy bulkCopy = new SqlBulkCopy(destinationConnection))
                {
                    bulkCopy.DestinationTableName = "dbo.Process";

                    try
                    {
                        // Write from the source to the destination.
                        bulkCopy.WriteToServer(dtTarget);
                    }
                    catch (Exception ex)
                    {
                        
                    }
                    finally
                    {
                        //  The SqlBulkCopy object is automatically closed 
                        // at the end of the using block.
                       
                    }
                }


            }


        }