在WEB项目开发过程中有时会碰到批量插入数据到数或者是将EXCEL文件据入到数据库中.为了方便实现可以先将EXCEL导入到GRIDVIEW中然后一次批量插入.实现代码如下:
前台代码
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 | <asp:GridView ID= "dgBom" runat= "server" AutoGenerateColumns= "false" CellPadding= "1" CellSpacing= "2" > <HeaderStyle BackColor= "#ededed" /> <Columns> <asp:TemplateField HeaderText= "学号" > <ItemTemplate> <asp:TextBox ID= "studentnumber" runat= "server" Text= '<%#Eval("studentnumber") %>' ></asp:TextBox> </ItemTemplate> </asp:TemplateField> <asp:TemplateField HeaderText= "学生姓名" > <ItemTemplate> <asp:TextBox ID= "studentname" runat= "server" Text= '<%#Eval("studentname") %>' ></asp:TextBox> </ItemTemplate> </asp:TemplateField> </Columns> </asp:GridView> <asp:FileUpload ID= "FileUpload1" runat= "server" Font-Italic= "False" /> <asp:Button ID= "btn2" runat= "server" OnClick= "btn2_Click" Text= "导入数据" /> <asp:Button ID= "btninsert" runat= "server" OnClick= "btninsert_Click" Text= "插入到数据库中" /> |
后台代码:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 | //首先在命名空间中加入以下两行 using System.Data.SqlClient; using System.Data.OleDb; protected void btn2_Click( object sender, EventArgs e) { string filepath = FileUpload1.PostedFile.FileName; ReadExcel(filepath, dgBom); } public void ReadExcel( string sExcelFile, GridView dgBom) { DataTable ExcelTable; DataSet ds = new DataSet(); //Excel的连接 OleDbConnection objConn = new OleDbConnection( "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + sExcelFile + ";" + "Extended Properties=Excel 8.0;" ); objConn.Open(); DataTable schemaTable = objConn.GetOleDbSchemaTable(System.Data.OleDb.OleDbSchemaGuid.Tables, null ); string tableName = schemaTable.Rows[0][2].ToString().Trim(); //获取 Excel 的表名,默认值是sheet1 string strSql = "select * from [" + tableName + "]" ; OleDbCommand objCmd = new OleDbCommand(strSql, objConn); OleDbDataAdapter myData = new OleDbDataAdapter(strSql, objConn); myData.Fill(ds, tableName); //填充数据 dgBom.DataSource =ds; dgBom.DataBind(); objConn.Close(); ExcelTable = ds.Tables[tableName]; int iColums = ExcelTable.Columns.Count; //列数 int iRows = ExcelTable.Rows.Count; //行数 //定义二维数组存储 Excel 表中读取的数据 string [,] storedata = new string [iRows, iColums]; for ( int i=0;i<ExcelTable.Rows.Count;i++) for ( int j = 0; j < ExcelTable.Columns.Count; j++) { //将Excel表中的数据存储到数组 storedata[i, j] = ExcelTable.Rows[i][j].ToString(); } int excelBom = 0; //记录表中有用信息的行数,有用信息是指除去表的标题和表的栏目,本例中表的用用信息是从第三行开始 //确定有用的行数 for ( int k = 2; k < ExcelTable.Rows.Count; k++) if (storedata[k, 1] != "" ) excelBom++; if (excelBom == 0) { Response.Write( "<script language=javascript>alert('您导入的表格不合格式!')</script>" ); } else { //LoadDataToDataBase(storedata,excelBom)//该函数主要负责将 storedata 中有用的数据写入到数据库中,在此不是问题的关键省略 } } protected void btninsert_Click( object sender, EventArgs e) { foreach (GridViewRow gv in dgBom.Rows) { //我的连接字符串是写在WEB.CONFIG中的. string con = System.Configuration.ConfigurationManager.AppSettings[ "ConnectionString1" ].ToString(); SqlConnection conn = new SqlConnection(con); SqlCommand cmd = conn.CreateCommand(); cmd.CommandType = CommandType.Text; cmd.CommandText = "insert into student (studentnumber,studentname) values(@studentnumber,@studentname)" ; cmd.Parameters.Add( "@studentnumber" , SqlDbType.NVarChar, 20); cmd.Parameters.Add( "@studentname" , SqlDbType.NVarChar, 10); cmd.Parameters[ "@studentname" ].Value = ((TextBox)gv.FindControl( "studentname" )).Text; cmd.Parameters[ "@studentnumber" ].Value = ((TextBox)gv.FindControl( "studentnumber" )).Text; try { conn.Open(); cmd.ExecuteNonQuery(); conn.Close(); } finally { if (conn != null ) conn.Dispose(); } } } |
以上内容就是本文的全部叙述,希望对大家学习C#.NET中如何批量插入大量数据到数据库中有所帮助。