Ｃ# SQL与EXCLE数据互导
EXCEL表里的数据导入SQL中，简化代码
View Code
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Data.SqlClient;
using System.Data.OleDb;
using System.Collections;
using System.IO;
namespace SqlExcel
{
public partial class Form2 : Form
{
public Form2()
{
InitializeComponent();
}
SqlHelper sqlhelper = new SqlHelper();
/// <summary>
/// 选择excle路径
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void button1_Click(object sender, EventArgs e)
{
using (OpenFileDialog dialog = new OpenFileDialog())
{
dialog.Multiselect = true;
if (dialog.ShowDialog() == DialogResult.OK)
{
try
{
textBox1.Text = dialog.FileName;
}
catch { }
}
}
}
/// <summary>
/// 先把excle读到Dataset里
/// </summary>
/// <param name="filenameurl">文件路径名</param>
/// <returns></returns>
public DataSet ExecleDs(string filenameurl)
{
string strConn = "Provider=Microsoft.Jet.OleDb.4.0;" + "data source=" + filenameurl + ";Extended Properties='Excel 8.0; HDR=YES; IMEX=1'";
OleDbConnection conn = new OleDbConnection(strConn);
OleDbCommand cmd = new OleDbCommand("select * from [Sheet1$]",conn);
OleDbDataAdapter odda = new OleDbDataAdapter(cmd);
DataSet ds = new DataSet();
odda.Fill(ds);
return ds;
}
/// <summary>
/// 把Dataset里的数据一行一行的插入到数据表里
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void button2_Click(object sender, EventArgs e)
{
int ii = 0;
DataSet ds = ExecleDs(textBox1.Text);
System.Data.DataTable dt = ds.Tables[0];
try
{
string strInsertComm;
for (int i = 0; i < dt.Rows.Count; i++)
{
strInsertComm = "";
strInsertComm = "Insert INTO T_Student(F_Num,F_Name,F_Sex,F_Dept)";
strInsertComm += " values(";
for (int j = 0; j < dt.Columns.Count; j++)
{
if (j > 0)
{
strInsertComm += ",'" + dt.Rows[i][j].ToString().Trim() + "'";
}
else
{
strInsertComm += "'" + dt.Rows[i][j].ToString().Trim() + "'";
}
}
strInsertComm += ")";
ii = sqlhelper.getcomnum(strInsertComm);//执行SQL语句
}
if (ii > 0)
{
MessageBox.Show("导入成功！");
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
EXCEL表里的数据导入SQL中，完整代码（代码是从EXCEL2007导入到数据库的，如果想从2003中导入，则将Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + FilePath + ";Extended Properties='Excel 12.0; HDR=YES; IMEX=1' 改为Provider=Microsoft.ACE.OLEDB.4.0;Data Source=" + FilePath + ";Extended Properties='Excel 8.0; HDR=YES; IMEX=1'）
View Code
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Data.SqlClient;
using System.Data.OleDb;
using System.Collections;
using System.IO;
using Excel = Microsoft.Office.Interop.Excel;
using Microsoft.Office.Interop.Excel;
namespace SqlExcel
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
SqlHelper sqlhelper = new SqlHelper();
private void Form1_Load(object sender, EventArgs e)
{
}
#region Excel导入SQL数据库
/// <summary>
/// 选择要向SQL数据库中导入数据的Excel文件
/// </summary>
private void btnChoose_Click(object sender, EventArgs e)
{
using (OpenFileDialog dialog = new OpenFileDialog())
{
dialog.Multiselect = true;
if (dialog.ShowDialog() == DialogResult.OK)
{
try
{
txtPath.Text = dialog.FileName;
}
catch { }
}
}
}
/// <summary>
/// 获取Excel数据表列表
/// </summary>
/// <returns></returns>
public static ArrayList GetExcelTables(string FilePath)
{
//将Excel架构存入数据里
System.Data.DataTable dt = new System.Data.DataTable();
ArrayList TablesList = new ArrayList();
if (File.Exists(FilePath))
{
using (OleDbConnection conn = new OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Extended Properties=\"Excel 8.0; HDR=YES; IMEX=1\";Data Source=" + FilePath))
{
try
{
conn.Open();
dt = conn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, new object[] { null, null, null, "TABLE" });
}
catch (Exception exp)
{
MessageBox.Show(exp.Message);
}
//获取数据表个数
int tablecount = dt.Rows.Count;
for (int i = 0; i < tablecount; i = i + 2)
{
string tablename = dt.Rows[i][2].ToString().Trim().TrimEnd('$');
if (TablesList.IndexOf(tablename) < 0)
{
TablesList.Add(tablename);
}
}
}
}
return TablesList;
}
/// <summary>
/// 导入Excel数据表至DataTable（第一行作为表头）
/// </summary>
/// <returns></returns>
public static System.Data.DataSet FillDataSet(string FilePath)
{
if (!File.Exists(FilePath))
{
throw new Exception("Excel文件不存在！");
}
ArrayList TableList = new ArrayList();
TableList = GetExcelTables(FilePath);
if (TableList.Count <= 0)
{
return null;
}
System.Data.DataTable table;
System.Data.DataSet ds = new DataSet();
OleDbConnection dbcon = new OleDbConnection(@"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + FilePath + ";Extended Properties='Excel 12.0; HDR=YES; IMEX=1'");
try
{
if (dbcon.State == ConnectionState.Closed)
{
dbcon.Open();
}
for (int i = 0; i < TableList.Count; i++)
{
string dtname = TableList[i].ToString();
try
{
OleDbCommand cmd = new OleDbCommand("select * from [Sheet1$]", dbcon);
OleDbDataAdapter adapter = new OleDbDataAdapter(cmd);
table = new System.Data.DataTable();
adapter.Fill(table);
ds.Tables.Add(table);
}
catch (Exception exp)
{
MessageBox.Show(exp.Message);
}
}
}
finally
{
if (dbcon.State == ConnectionState.Open)
{
dbcon.Close();
}
}
return ds;
}
/// <summary>
/// Excel导入数据库
/// </summary>
/// <returns></returns>
public static DataSet ImportFromExcel(string FilePath)
{
return FillDataSet(FilePath);
}
/// <summary>
/// 将Excel中的数据导入到SQL数据库中
/// </summary>
private void btnExcelToSql_Click(object sender, EventArgs e)
{
int ii = 0;
DataSet ds = ImportFromExcel(txtPath.Text);
System.Data.DataTable dt = ds.Tables[0];
try
{
string strInsertComm;
for (int i = 0; i < dt.Rows.Count; i++)
{
strInsertComm = "";
strInsertComm = "Insert INTO T_Student(F_Num,F_Name,F_Sex,F_Dept)";
strInsertComm += " values(";
for (int j = 0; j < dt.Columns.Count; j++)
{
if (j > 0)
{
strInsertComm += ",'" + dt.Rows[i][j].ToString().Trim() + "'";
}
else
{
strInsertComm += "'" + dt.Rows[i][j].ToString().Trim() + "'";
}
}
strInsertComm += ")";
ii = sqlhelper.getcomnum(strInsertComm);
}
if (ii > 0)
{
MessageBox.Show("导入成功！");
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
#endregion
下面为SQL2005里的数据导出到EXCEL中，先添加excel引用，再加上using Excel = Microsoft.Office.Interop.Excel;
using Microsoft.Office.Interop.Excel;这两个命名空间，代码如下：
View Code
#region sql数据库导出Excel
public void Export(string tableName)
{
DataSet ds1 = sqlhelper.getds("select F_Num as '学 号',F_Name as '姓 名',F_Sex as '性 别',F_Dept as '所有系院' from " + tableName, tableName);
if (ds1 == null)
{
MessageBox.Show("系统内部错误！请联系系统开发者！", "出错了：", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
string saveFileName = "";
SaveFileDialog saveDialog = new SaveFileDialog();
saveDialog.DefaultExt = "xls";
saveDialog.Filter = "Excel文件|*.xls";
saveDialog.FileName = "";
saveDialog.ShowDialog();
saveFileName = saveDialog.FileName;
if (saveFileName.IndexOf(":") < 0)
{
MessageBox.Show("您取消了导出操作！", "提示信息：", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
return;
}
Microsoft.Office.Interop.Excel.Application xlApp = new Microsoft.Office.Interop.Excel.Application();
object miss = System.Reflection.Missing.Value;
if (xlApp == null)
{
MessageBox.Show("无法创建Excel对象，可能您的机子未安装Excel！", "出错了：", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
Microsoft.Office.Interop.Excel.Workbooks workbooks = xlApp.Workbooks;
Microsoft.Office.Interop.Excel.Workbook workbook = workbooks.Add(Microsoft.Office.Interop.Excel.XlWBATemplate.xlWBATWorksheet);
Microsoft.Office.Interop.Excel.Worksheet worksheet = (Microsoft.Office.Interop.Excel.Worksheet)workbook.Worksheets[1];//取得sheet1
Microsoft.Office.Interop.Excel.Range range;
//总行数和总列数
long totalRowCount = ds1.Tables[0].Rows.Count;
long totalColCount = ds1.Tables[0].Columns.Count;
//写入第一行表头
for (int i = 0; i < totalColCount; i++)
{
worksheet.Cells[1, i + 1] = ds1.Tables[0].Columns[i].ColumnName;
range = (Microsoft.Office.Interop.Excel.Range)worksheet.Cells[1, i + 1];
range.Interior.ColorIndex = 15;
range.Font.Size = 15;//设定标题的大小
range.Columns.AutoFit();//自动调整报表表格宽度为最适合宽度
range.Font.Bold = true;
}
//写入数值
for (int r = 0; r < totalRowCount; r++)
{
for (int i = 0; i < totalColCount; i++)
{
worksheet.Cells[r + 2, i + 1] = ds1.Tables[0].Rows[r][i].ToString();
range = (Microsoft.Office.Interop.Excel.Range)worksheet.Cells[r + 2, 1];//设置第一列为自动调整宽度
range.Columns.AutoFit();
}
}
range = worksheet.get_Range(worksheet.Cells[2, 1], worksheet.Cells[ds1.Tables[0].Rows.Count + 1, ds1.Tables[0].Columns.Count]);
if (totalRowCount > 0)
{
range.Borders[Microsoft.Office.Interop.Excel.XlBordersIndex.xlInsideHorizontal].ColorIndex = Microsoft.Office.Interop.Excel.XlColorIndex.xlColorIndexAutomatic;
range.Borders[Microsoft.Office.Interop.Excel.XlBordersIndex.xlInsideHorizontal].LineStyle = Microsoft.Office.Interop.Excel.XlLineStyle.xlContinuous;
range.Borders[Microsoft.Office.Interop.Excel.XlBordersIndex.xlInsideHorizontal].Weight = Microsoft.Office.Interop.Excel.XlBorderWeight.xlThin;
}
if (totalColCount > 1)
{
range.Borders[Microsoft.Office.Interop.Excel.XlBordersIndex.xlInsideVertical].ColorIndex = Microsoft.Office.Interop.Excel.XlColorIndex.xlColorIndexAutomatic;
range.Borders[Microsoft.Office.Interop.Excel.XlBordersIndex.xlInsideVertical].LineStyle = Microsoft.Office.Interop.Excel.XlLineStyle.xlContinuous;
range.Borders[Microsoft.Office.Interop.Excel.XlBordersIndex.xlInsideVertical].Weight = Microsoft.Office.Interop.Excel.XlBorderWeight.xlThin;
}
if (range != null)
{
System.Runtime.InteropServices.Marshal.ReleaseComObject(range);
range = null;
}
if (worksheet != null)
{
System.Runtime.InteropServices.Marshal.ReleaseComObject(worksheet);
worksheet = null;
}
if (saveFileName != "")
{
try
{
workbook.Saved = true;
System.Reflection.Missing missing = System.Reflection.Missing.Value;
workbook.SaveAs(saveFileName, Microsoft.Office.Interop.Excel.XlFileFormat.xlWorkbookNormal, miss, miss, miss, miss,
Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlNoChange, miss, miss, miss, miss, miss);
MessageBox.Show("导出成功！", "提示信息：", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
}
catch (Exception ex)
{
MessageBox.Show("导出文件错误！请重试！", "出错了：", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
if (workbook != null)
{
System.Runtime.InteropServices.Marshal.ReleaseComObject(workbook);
workbook = null;
}
if (workbooks != null)
{
System.Runtime.InteropServices.Marshal.ReleaseComObject(workbooks);
workbooks = null;
}
xlApp.Application.Workbooks.Close();
xlApp.Quit();
GC.Collect();
}
private void button1_Click(object sender, EventArgs e)
{
Export("T_Student");
}
#endregion