本篇文章主要介绍了C# 通过 oledb 操作Excel实例代码，小编觉得挺不错的，现在分享给大家，也给大家做个参考。一起跟随小编过来看看吧
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public string GetConnectionString() { Dictionary<string, string> props = new Dictionary<string, string>(); // XLSX - Excel 2007, 2010, 2012, 2013 props["Provider"] = "Microsoft.ACE.OLEDB.12.0;"; props["Extended Properties"] = "Excel 12.0 XML"; props["Data Source"] = @"C:\tools\MyExcel.xlsx"; // XLS - Excel 2003 and Older //props["Provider"] = "Microsoft.Jet.OLEDB.4.0"; //props["Extended Properties"] = "Excel 8.0"; //props["Data Source"] = "C:\\MyExcel.xls"; var sb = new StringBuilder(); foreach (KeyValuePair<string, string> prop in props) { sb.Append(prop.Key); sb.Append('='); sb.Append(prop.Value); sb.Append(';'); } return sb.ToString(); } public void WriteExcelFile() { string connectionString = GetConnectionString(); using (OleDbConnection conn = new OleDbConnection(connectionString)) { conn.Open(); OleDbCommand cmd = new OleDbCommand(); cmd.Connection = conn; cmd.CommandText = "CREATE TABLE [table1] (id INT, name VARCHAR, datecol DATE );"; cmd.ExecuteNonQuery(); cmd.CommandText = "INSERT INTO [table1](id<div>本文来源gaodai^.ma#com搞#代!码网</div>,name,datecol) VALUES(1,'AAAA','2014-01-01');"; cmd.ExecuteNonQuery(); cmd.CommandText = "INSERT INTO [table1](id,name,datecol) VALUES(2, 'BBBB','2014-01-03');"; cmd.ExecuteNonQuery(); cmd.CommandText = "INSERT INTO [table1](id,name,datecol) VALUES(3, 'CCCC','2014-01-03');"; cmd.ExecuteNonQuery(); cmd.CommandText = "UPDATE [table1] SET name = 'DDDD' WHERE id = 3;"; cmd.ExecuteNonQuery(); conn.Close(); } } public DataSet ReadExcelFile() { DataSet ds = new DataSet(); string connectionString = GetConnectionString(); using (OleDbConnection conn = new OleDbConnection(connectionString)) { conn.Open(); OleDbCommand cmd = new OleDbCommand(); cmd.Connection = conn; // Get all Sheets in Excel File DataTable dtSheet = conn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null); // Loop through all Sheets to get data foreach (DataRow dr in dtSheet.Rows) { string sheetName = dr["TABLE_NAME"].ToString(); if (!sheetName.EndsWith("$")) continue; // Get all rows from the Sheet cmd.CommandText = "SELECT * FROM [" + sheetName + "]"; DataTable dt = new DataTable(); dt.TableName = sheetName; OleDbDataAdapter da = new OleDbDataAdapter(cmd); da.Fill(dt); ds.Tables.Add(dt); } cmd = null; conn.Close(); } return ds; }
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