Excel和SQLserver数据互相存取

#region filed
DataSet dataSet;
#endregion

#region Excel导出到DataBase
/// <summary>
///从Excel中导入到到DataSet
/// </summary>
/// <param name="filePath">Excel文件路径</param>
public void ImportToDataBase(string filePath)
{
GetExcelData(filePath);
WriteToDataSet();
}
/// <summary>
///从Excel中获取数据
/// </summary>
/// <param name="filePath">Excel文件路径</param>
void GetExcelData(string filePath)
{
string strCon = "Provider=Microsoft.ACE.OLEDB.12.0;" +
"Data Source =" + filePath + ";" +
" Extended Properties='Excel 8.0;HDR = Yes;IMEX = 2'";
string strSql = "select * from [Sheet1$]";
OleDbConnection oleDbConnection = new OleDbConnection(strCon);
OleDbDataAdapter oleDbDataAdapter = new OleDbDataAdapter(strSql, oleDbConnection);
dataSet = new DataSet();
oleDbConnection.Open();
oleDbDataAdapter.Fill(dataSet);
oleDbConnection.Close();
dataSet=null;
GC.Collect();
}
/// <summary>
/// 将dataSet中的数据写入到DataBase
/// </summary>
void WriteToDataSet()
{
StringBuilder strbSql = new StringBuilder();
string strCon = @"Data Source=PANLEE-PC\MSSQLSERVER_2;Initial Catalog=DBImage;Integrated Security=True";
SqlConnection sqlConnection = new SqlConnection(strCon);
SqlCommand sqlCommand = new SqlCommand();
sqlCommand.Connection = sqlConnection;
sqlConnection.Open();

try
{
string sqlCreate = @"Create Table Students(
学号 varchar(50),
姓名 varchar(50),
专业班级 varchar(50),
手机号码 varchar(50),
)";
sqlCommand.CommandText = sqlCreate;
sqlCommand.ExecuteNonQuery();
}
catch { }

for (int i = 0; i < dataSet.Tables[0].Rows.Count; i++)
{
strbSql.Append("insert into Students(学号, 姓名, 专业班级, 手机号码) values('");
for (int j = 0; j < 3; j++)
{
strbSql.Append(dataSet.Tables[0].Rows[i].ItemArray[j].ToString() + "','");
}
strbSql.Append(dataSet.Tables[0].Rows[i].ItemArray[3].ToString() + "')");
string strSql = strbSql.ToString();
sqlCommand.CommandText = strSql;
sqlCommand.ExecuteNonQuery();
strbSql.Remove(0, strbSql.Length);
}
sqlConnection.Close();
}
#endregion

#region DataBase导出到Excel

public void ImportToExcel(string SaveFileName)
{
GetDataBaseData();
CreateExcel(SaveFileName);
WriteToExcel(SaveFileName);
}

/// <summary>
///从DataBase中获取数据到DataSet
/// </summary>
public void GetDataBaseData()
{
String strSql = "select * from Students";
string strCon = @"Data Source=PANLEE-PC\MSSQLSERVER_2;Initial Catalog=DBImage;Integrated Security=True";
SqlConnection sqlConnection = new SqlConnection(strCon);
SqlDataAdapter sqlDataAdapter = new SqlDataAdapter(strSql, strCon);
dataSet = new DataSet();
sqlConnection.Open();
sqlDataAdapter.Fill(dataSet);
sqlConnection.Close();
dataSet = null;
GC.Collect();
}

/// <summary>
/// 创建Excel
/// </summary>
/// <param name="SaveFileName"></param>
private void CreateExcel(string SaveFileName)
{
Microsoft.Office.Interop.Excel.Application excel = new Microsoft.Office.Interop.Excel.Application();
Microsoft.Office.Interop.Excel.Workbook wBook = excel.Application.Workbooks.Add(Missing.Value);
excel.Visible = true;
excel.DisplayAlerts = false;

4000
excel.AlertBeforeOverwriting = true;
wBook.SaveAs(SaveFileName,
Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value,
Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlNoChange, Missing.Value, Missing.Value, Missing.Value,
Missing.Value, Missing.Value);
wBook = null;
excel.Quit();
excel = null;
}

/// <summary>
/// 写入数据到Excel
/// </summary>
/// <param name="SaveFileName"></param>
private void WriteToExcel(string SaveFileName)
{

string strCon = "Provider=Microsoft.ACE.OLEDB.12.0;" +
"Data Source =" + SaveFileName + ";" +
" Extended Properties='Excel 8.0;HDR = Yes;IMEX = 2'";
StringBuilder strbSql = new StringBuilder();
OleDbConnection oleDbConnection = new OleDbConnection(strCon);
OleDbCommand oleDbCom = new OleDbCommand();
oleDbCom.Connection = oleDbConnection;
oleDbConnection.Open();//学号, 姓名, 专业班级, 手机号码

string strSql = "create table Sheet1 (学号 char(50),姓名 char(50), 专业班级 char(50),手机号码 char(50)) ";
oleDbCom.CommandText = strSql;
oleDbCom.ExecuteNonQuery();
for (int i = 0; i < dataSet.Tables[0].Rows.Count; i++)
{
strbSql.Append("insert into [Sheet1$] values('");
for (int j = 0; j < 3; j++)
{
strbSql.Append(dataSet.Tables[0].Rows[i].ItemArray[j].ToString() + "','");
}
strbSql.Append(dataSet.Tables[0].Rows[i].ItemArray[3].ToString() + "')");
strSql = strbSql.ToString();
oleDbCom.CommandText = strSql;
oleDbCom.ExecuteNonQuery();
strbSql.Remove(0, strbSql.Length);
}
oleDbConnection.Close();
}
#endregion