最近项目要求实现数据库之间数据在各个数据库之间导入导出，在此做个笔记
1. 将Oracle中的表导入到Excel中，反之亦然
private static readonly string connectionString = ConfigurationManager.ConnectionStrings["OracleConnection"].ConnectionString; 1 public void print(DataGridView dataGridView1)
2 {
3 //导出到execl
4 try
5 {
6 SaveFileDialog saveFileDialog = new SaveFileDialog();
7 saveFileDialog.Filter = "导出Excel2003~2007 (*.xls)|*.xls|导出Excel2010~2013 (*.xlsx)|*.xlsx";
8 saveFileDialog.FilterIndex = 0;
9 saveFileDialog.RestoreDirectory = true;
10 saveFileDialog.CreatePrompt = true;
11 saveFileDialog.Title = "导出文件保存路径";
12 saveFileDialog.ShowDialog();
13 string strName = saveFileDialog.FileName;
14 if (strName.Length != 0)
15 {
16 //没有数据的话就不往下执行
17 if (dataGridView1.Rows.Count == 0)
18 return;
19
20 // toolStripProgressBar1.Visible = true;
21 System.Reflection.Missing miss = System.Reflection.Missing.Value;
22 //实例化一个Excel.Application对象
23 Microsoft.Office.Interop.Excel.Application excel = new Microsoft.Office.Interop.Excel.Application();
24 excel.Application.Workbooks.Add(true);
25 excel.Visible = false;//若是true，则在导出的时候会显示EXcel界面。
26 if (excel == null)
27 {
28 MessageBox.Show("EXCEL无法启动！", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
29 return;
30 }
31 Microsoft.Office.Interop.Excel.Workbooks books = (Microsoft.Office.Interop.Excel.Workbooks)excel.Workbooks;
32 Microsoft.Office.Interop.Excel.Workbook book = (Microsoft.Office.Interop.Excel.Workbook)(books.Add(miss));
33 Microsoft.Office.Interop.Excel.Worksheet sheet = (Microsoft.Office.Interop.Excel.Worksheet)book.ActiveSheet;
34 sheet.Name = "test";
35 int m = 0, n = 0;
36 //生成Excel中列头名称
37 for (int i = 0; i < dataGridView1.Columns.Count; i++)
38 {
39 excel.Cells[1, i + 1] = dataGridView1.Columns[i].HeaderText;//输出DataGridView列头名
40 }
41 //把DataGridView当前页的数据保存在Excel中
42 for (int i = 0; i < dataGridView1.Rows.Count - 1; i++)
43 {
44 for (int j = 0; j < dataGridView1.Columns.Count; j++)
45 {
46 if (dataGridView1[j, i].ValueType == typeof(string))
47 {
48 excel.Cells[i + 2, j + 1] = "‘" + dataGridView1[j, i].Value.ToString();
49 }
50 else
51 {
52 excel.Cells[i + 2, j + 1] = dataGridView1[j, i].Value.ToString();
53 }
54 }
55 }
56 sheet.SaveAs(strName, miss, miss, miss, miss, miss, Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlNoChange, miss, miss, miss);
57 book.Close(false, miss, miss);
58 books.Close();
59 excel.Quit();
60 System.Runtime.InteropServices.Marshal.ReleaseComObject(sheet);
61 System.Runtime.InteropServices.Marshal.ReleaseComObject(book);
62 System.Runtime.InteropServices.Marshal.ReleaseComObject(books);
63 System.Runtime.InteropServices.Marshal.ReleaseComObject(excel);
64 GC.Collect();
65 MessageBox.Show("数据已经成功导出!", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
66 // toolStripProgressBar1.Value = 0;
67 System.Diagnostics.Process.Start(strName);
68 }
69 }
70 catch (Exception ex)
71 {
72 MessageBox.Show(ex.Message, "错误提示");
73 }
74 }
1 public void printAll(System.Data.DataTable dt)
2 {
3 //导出到execl
4 try
5 {
6 SaveFileDialog saveFileDialog = new SaveFileDialog();
7 saveFileDialog.Filter = "导出Excel (*.xls)|*.xls";
8 saveFileDialog.FilterIndex = 0;
9 saveFileDialog.RestoreDirectory = true;
10 saveFileDialog.CreatePrompt = true;
11 saveFileDialog.Title = "导出文件保存路径";
12 saveFileDialog.ShowDialog();
13 string strName = saveFileDialog.FileName;
14 if (strName.Length != 0)
15 {
16 //没有数据的话就不往下执行
17 if (dt.Rows.Count == 0)
18 return;
19
20 // toolStripProgressBar1.Visible = true;
21 System.Reflection.Missing miss = System.Reflection.Missing.Value;
22 //实例化一个Excel.Application对象
23 Microsoft.Office.Interop.Excel.Application excel = new Microsoft.Office.Interop.Excel.Application();
24 excel.Application.Workbooks.Add(true);
25 excel.Visible = false;//若是true，则在导出的时候会显示EXcel界面。
26 if (excel == null)
27 {
28 MessageBox.Show("EXCEL无法启动！", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
29 return;
30 }
31 Microsoft.Office.Interop.Excel.Workbooks books = (Microsoft.Office.Interop.Excel.Workbooks)excel.Workbooks;
32 Microsoft.Office.Interop.Excel.Workbook book = (Microsoft.Office.Interop.Excel.Workbook)(books.Add(miss));
33 Microsoft.Office.Interop.Excel.Worksheet sheet = (Microsoft.Office.Interop.Excel.Worksheet)book.ActiveSheet;
34 sheet.Name = "test";
38 //生成Excel中列头名称
39 for (int i = 0; i < dt.Columns.Count; i++)
40 {
41 excel.Cells[1, i + 1] = dataGridView1.Columns[i].HeaderText;//输出DataGridView列头名
42 }
43
44 //把DataGridView当前页的数据保存在Excel中
45 if (dt.Rows.Count > 0)
46 {
47 for (int i = 0; i < dt.Rows.Count; i++)//控制Excel中行，上下的距离，就是可以到Excel最下的行数，比数据长了报错，比数据短了会显示不完
48 {
49 for (int j = 0; j < dt.Columns.Count; j++)//控制Excel中列，左右的距离，就是可以到Excel最右的列数，比数据长了报错，比数据短了会显示不完
50 {
51 string str = dt.Rows[i][j].ToString();
52 excel.Cells[i + 2, j + 1] = "‘" + str;//i控制行，从Excel中第2行开始输出第一行数据，j控制列，从Excel中第1列输出第1列数据，"‘" +是以string形式保存，所以遇到数字不会转成16进制
53 }
54 }
55 }
56 sheet.SaveAs(strName, miss, miss, miss, miss, miss, Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlNoChange, miss, miss, miss);
57 book.Close(false, miss, miss);
58 books.Close();
59 excel.Quit();
60 System.Runtime.InteropServices.Marshal.ReleaseComObject(sheet);
61 System.Runtime.InteropServices.Marshal.ReleaseComObject(book);
62 System.Runtime.InteropServices.Marshal.ReleaseComObject(books);
63 System.Runtime.InteropServices.Marshal.ReleaseComObject(excel);
64
65 GC.Collect();
66 MessageBox.Show("数据已经成功导出!", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
67 // toolStripProgressBar1.Value = 0;
68 System.Diagnostics.Process.Start(strName);
69 }
70 }
71 catch (Exception ex)
72 {
73 MessageBox.Show(ex.Message, "错误提示");
74 }
75 }
这两个方法都可以将Oracle导出到Excel中。转自http://www.cnblogs.com/cpcpc/archive/2012/11/13/2767934.html
1 class Excel2Oracle
2 {
3 private static readonly string connectionString = ConfigurationManager.ConnectionStrings["OracleConnection"].ConnectionString;
4 public void InsertData2Oracle(DataSet ds)
5 {
6 using (OleDbConnection oraCon = new OleDbConnection(connectionString))
7 {
8 oraCon.Open();
9 using (OleDbCommand cmd = new OleDbCommand())
10 {
11 cmd.Connection = oraCon;
12 cmd.CommandType = CommandType.Text;
13
14 for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
15 {
16 List<string> list_ = new List<string>();
17 for (int j = 0; j < ds.Tables[0].Columns.Count; j++)
18 {
19 list_.Add(ds.Tables[0].Rows[i][j].ToString());
20 }
21 string temp = "";
22 string t = ",";
23
24 for (int k = 0; k < list_.Count; k++)
25 {
26 if (k == list_.Count - 1) t = "";
27 temp = temp + "‘" + list_[k] + "‘" + t + "";
28 cmd.CommandText = string.Format("Insert into TBUSER values(" + temp + ")");
29 }
30
31 cmd.ExecuteNonQuery();
32 }
33
34 }
35 oraCon.Close();
36
37 }
38 } }
代码比废话更要迷人，我就不多说什么了
时间： 2024-11-08 11:40:54