SQL与EXCEL交互(导出/导入)
EXCE->SQL
//方案一： 通过OleDB方式获取Excel文件的数据，然后通过DataSet中转到SQL Server
openFileDialog = new OpenFileDialog();
openFileDialog.Filter = "Excel files(*.xls)|*.xls";
if(openFileDialog.ShowDialog()==DialogResult.OK)
{
FileInfo fileInfo = new FileInfo(openFileDialog.FileName);
string filePath = fileInfo.FullName;
string connExcel = "rovider=Microsoft.Jet.OLEDB.4.0;Data Source=" + filePath + ";Extended Properties=Excel 8.0";
try
{
OleDbConnection oleDbConnection = new OleDbConnection(connExcel);
oleDbConnection.Open();
//获取excel表
DataTable dataTable = oleDbConnection.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);
//获取sheet名，其中[0][1]...[N]: 按名称排列的表单元素
string tableName = dataTable.Rows[0][2].ToString().Trim();
tableName = "[" + tableName.Replace("'","") + "]";
//利用SQL语句从Excel文件里获取数据
//string query = "SELECT classDate,classPlace,classTeacher,classTitle,classID FROM " + tableName;
string query = "SELECT 曰期,开课城市,讲师,课程名称,持续时间 FROM " + tableName;
dataSet = new DataSet();
//OleDbCommand oleCommand = new OleDbCommand(query, oleDbConnection);
//OleDbDataAdapter oleAdapter = new OleDbDataAdapter(oleCommand);
OleDbDataAdapter oleAdapter = new OleDbDataAdapter(query,connExcel);
oleAdapter.Fill(dataSet,"gch_Class_Info");
//dataGrid1.DataSource = dataSet;
//dataGrid1.DataMember = tableName;
dataGrid1.SetDataBinding(dataSet,"gch_Class_Info");
//从excel文件获得数据后，插入记录到SQL Server的数据表
DataTable dataTable1 = new DataTable();
SqlDataAdapter sqlDA1 = new SqlDataAdapter(@"SELECT classID, classDate,
classPlace, classTeacher, classTitle, durativeDate FROM gch_Class_Info",sqlConnection1);
SqlCommandBuilder sqlCB1 = new SqlCommandBuilder(sqlDA1);
sqlDA1.Fill(dataTable1);
foreach(DataRow dataRow in dataSet.Tables["gch_Class_Info"].Rows)
{
DataRow dataRow1 = dataTable1.NewRow();
dataRow1["classDate"] = dataRow["曰期"];
dataRow1["classPlace"] = dataRow["开课城市"];
dataRow1["classTeacher"] = dataRow["讲师"];
dataRow1["classTitle"] = dataRow["课程名称"];
dataRow1["durativeDate"] = dataRow["持续时间"];
dataTable1.Rows.Add(dataRow1);
}
Console.WriteLine("新插入 " + dataTable1.Rows.Count.ToString() + " 条记录");
sqlDA1.Update(dataTable1);
oleDbConnection.Close();
}
catch(Exception ex)
{
Console.WriteLine(ex.ToString());
}
}
//方案二： 直接通过SQL语句执行SQL Server的功能函数将Excel文件转换到SQL Server数据库
OpenFileDialog openFileDialog = new OpenFileDialog();
openFileDialog.Filter = "Excel files(*.xls)|*.xls";
SqlConnection sqlConnection1 = null;
if(openFileDialog.ShowDialog()==DialogResult.OK)
{
string filePath = openFileDialog.FileName;
sqlConnection1 = new SqlConnection();
sqlConnection1.ConnectionString = "server=(local);integrated security=SSPI;initial catalog=Library";
//import excel into SQL Server 2000
/*string importSQL = "SELECT * into live41 FROM OpenDataSource" +
"('Microsoft.Jet.OLEDB.4.0','Data Source=" + "\"" + "E:\\022n.xls" + "\"" +
"; User ID=assword=; Extended properties=Excel 5.0')...[Sheet1$]";*/
//export SQL Server 2000 into excel
string exportSQL = @"EXEC master..xp_cmdshell
'bcp Library.dbo.live41 out " + filePath + "-c -q -S" + "\"" + "\"" +
" -U" + "\"" + "\"" + " -P" + "\"" + "\"" + "\'";
try
{
sqlConnection1.Open();
//SqlCommand sqlCommand1 = new SqlCommand();
//sqlCommand1.Connection = sqlConnection1;
//sqlCommand1.CommandText = importSQL;
//sqlCommand1.ExecuteNonQuery();
//MessageBox.Show("import finish!");
SqlCommand sqlCommand2 = new SqlCommand();
sqlCommand2.Connection = sqlConnection1;
sqlCommand2.CommandText = exportSQL;
sqlCommand2.ExecuteNonQuery();
MessageBox.Show("export finish!");
}
catch(Exception ex)
{
MessageBox.Show(ex.ToString());
}
}
if(sqlConnection1!=null)
{
sqlConnection1.Close();
sqlConnection1 = null;
}
//方案三： 通过到入Excel的VBA dll，通过VBA接口获取Excel数据到DataSet
OpenFileDialog openFile = new OpenFileDialog();
openFile.Filter = "Excel files(*.xls)|*.xls";
ExcelIO excelio = new ExcelIO();
if(openFile.ShowDialog()==DialogResult.OK)
{
if(excelio!=null)
excelio.Close();
excelio = new ExcelIO(openFile.FileName);
object[,] range = excelio.GetRange();
excelio.Close();
DataSet ds = new DataSet("xlsRange");
int x = range.GetLength(0);
int y = range.GetLength(1);
DataTable dt = new DataTable("xlsTable");
DataRow dr;
DataColumn dc;
ds.Tables.Add(dt);
for(int c=1; c<=y; c++)
{
dc = new DataColumn();
dt.Columns.Add(dc);
}
object[] temp = new object[y];
for(int i=1; i<=x; i++)
{
dr = dt.NewRow();
for(int j=1; j<=y; j++)
{
temp[j-1] = range[i,j];
}
dr.ItemArray = temp;
ds.Tables[0].Rows.Add(dr);
}
dataGrid1.SetDataBinding(ds,"xlsTable");
if(excelio!=null)
excelio.Close();
}
SQL->EXCEL
public class OPExcel
{
public OPExcel(){}
public bool WritDataSetToExcel(DataSet ds,string ExcelPath,ProgressBar pb)
{
if(ds==null)return false;
int row=ds.Tables [0].Rows .Count ;
int col=ds.Tables [0].Columns .Count ;
if(row <1 || col<1)return false;
pb.Minimum =0;pb.Maximum =row;pb.Value =0;
Excel.ApplicationClass excel=new Excel.ApplicationClass ();
try
{
excel.Workbooks.Add (Type.Missing );
Excel.Worksheet sheet=(Excel.Worksheet)excel.ActiveSheet;
for(int i=0;i<col;i++)
sheet.Cells [1,i+1]=ds.Tables [0].Columns.ToString ();
for(int i=0;i<row;i++)
{
Application.DoEvents ();
for(int j=0;j<col;j++)
{
sheet.Cells [i+2,j+1]="'"+ds.Tables [0].Rows [j].ToString ();
}
pb.Value ++;
}
excel.Save (ExcelPath);
excel.Quit ();
}
catch(System.Exception ex){MessageBox.Show (ex.Message );excel.Quit ();return false;}
GC.Collect ();
return true;
}
}
