主要运用表类型
1 Create table BulkTestTable( 2 Id nvarchar(32), 3 UserName nvarchar(32), 4 Pwd nvarchar(32) 5 ) 6 Go 7 CREATE TYPE BulkUdt AS TABLE 8 (Id nvarchar(32), 9 UserName nvarchar(32), 10 Pwd nvarchar(32) )
C#端读取Excel
/// <summary>
/// 读取Excel中数据
/// </summary>
/// <param name="strExcelPath"></param>
/// <param name="tableName"></param>
/// <returns></returns>
public DataTable GetExcelTableByOleDB(string strExcelPath, string tableName)
{
try
{
DataTable dtExcel = new DataTable();
//数据表
DataSet ds = new DataSet();
//获取文件扩展名
string strExtension = System.IO.Path.GetExtension(strExcelPath);
string strFileName = System.IO.Path.GetFileName(strExcelPath);
//Excel的连接
OleDbConnection objConn = null;
switch (strExtension)
{
case ".xls":
objConn = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + strExcelPath + ";" + "Extended Properties=\"Excel 8.0;HDR=NO;IMEX=1;\"");
break;
case ".xlsx":
objConn = new OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + strExcelPath + ";" + "Extended Properties=\"Excel 12.0;HDR=NO;IMEX=1;\"");
break;
default:
objConn = null;
break;
}
if (objConn == null)
{
return null;
}
objConn.Open();
//获取Excel中所有Sheet表的信息
//System.Data.DataTable schemaTable = objConn.GetOleDbSchemaTable(System.Data.OleDb.OleDbSchemaGuid.Tables, null);
//获取Excel的第一个Sheet表名
// string tableName1 = schemaTable.Rows[0][2].ToString().Trim();
string strSql = "select * from [" + tableName + "$]";
//获取Excel指定Sheet表中的信息
OleDbCommand objCmd = new OleDbCommand(strSql, objConn);
OleDbDataAdapter myData = new OleDbDataAdapter(strSql, objConn);
myData.Fill(ds, tableName);//填充数据
objConn.Close();
//dtExcel即为excel文件中指定表中存储的信息
dtExcel = ds.Tables[tableName];
return dtExcel;
}
catch(Exception ex)
{
MessageBox.Show(ex.Message);
return null;
}
}
C#端插入到sql表中
/// <summary>
/// 导入msSql
/// </summary>
/// <param name="?"></param>
/// <returns></returns>
public int ExcelToMsSQL(string tablename,DataTable dt)
{
int count = 0;
string Connstr = "Data Source=;Initial Catalog=;Persist Security Info=True;User ID=;Password=";
SqlConnection sqlConn = new SqlConnection(Connstr);
const string TSqlStatement =
"insert into BulkTestTable (Id,UserName,Pwd)" +
" SELECT nc.Id, nc.UserName,nc.Pwd" +
" FROM @NewBulkTestTvp AS nc";
SqlCommand cmd = new SqlCommand(TSqlStatement, sqlConn);
SqlParameter catParam = cmd.Parameters.AddWithValue("@NewBulkTestTvp", dt);
catParam.SqlDbType = SqlDbType.Structured;
//表值参数的名字叫BulkUdt，在上面的建立测试环境的SQL中有。
catParam.TypeName = "dbo.BulkUdt";
try
{
sqlConn.Open();
if (dt != null && dt.Rows.Count != 0)
{
count = cmd.ExecuteNonQuery();
}
}
catch (Exception ex)
{
throw ex;
}
finally
{
sqlConn.Close();
}
return count ;
}
C#读取Excel的其中一种方式OleDb读取（100万条）--快速大量插入SQL中
原文：http://www.cnblogs.com/tanhu/p/5984696.html