Excel Metadata

?

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 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502

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.OleDb; using System.Collections; using System.IO;   /* 当 IMEX=0 时为“汇出模式”，这个模式开启的 Excel 档案只能用来做“写入”用途。   当 IMEX=1 时为“汇入模式”，这个模式开启的 Excel 档案只能用来做“读取”用途。   当 IMEX=2 时为“连結模式”，这个模式开启的 Excel 档案可同时支援“读取”与“写入”用途。 */ /*   列类型 经典 ADO  ADO.Net （OleDb） 数字  5-adDouble  5-OleDbType.Double 货币  6-adCurrency    6-OleDbType.Currency 日期/时间   7-adDate    7-OleDbType.Date 布尔值 11-adBoolean    11-OleDbType.Boolean 文本 < 255 202-adVarWChar  130-OleDbType.WChar 备注  203-adLongVarWChar  130-OleDbType.WChar  */   namespace ExcelGenerator {     /// <summary>     /// http://support.microsoft.com/zh-cn/kb/318452     /// http://www.codeproject.com/Articles/37055/Working-with-MS-Excel-xls-xlsx-Using-MDAC-and-Oled     /// 20150325     /// 涂聚文     /// </summary>     public partial class ExcelFileForm : Form     {         //"Provider=Microsoft.Jet.OLEDB.4.0; Data Source=c:\\test.xls;Extended Properties=Excel 8.0";         //Microsoft.ACE.OLEDB.12.0;Data Source=c:\myFolder\myExcel2007file.xlsm;Extended Properties = "Excel 12.0 Macro;HDR=YES";         //Provider=Microsoft.ACE.OLEDB.12.0;Data Source=c:\myFolder\myBinaryExcel2007file.xlsb;Extended Properties="Excel 12.0;HDR=YES";         //Provider=Microsoft.ACE.OLEDB.12.0;Data Source=c:\myFolder\myOldExcelFile.xls;Extended Properties = "Excel 8.0;HDR=YES";         //Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\MyExcel.xls; Extended Properties = "Excel 8.0;HDR=Yes;IMEX=1";         string connectionString = "Provider=Microsoft.Jet.OLEDB.4.0; Data Source=c:\\test.xls;Extended Properties=Excel 8.0;HDR=Yes;IMEX=1;";         private OleDbConnection cn;                  private DataTable dtTables;         private CurrencyManager cm;         private DataTable dtColumns;         private DataView dvColumns;           string fileurl = string.Empty;         /// <summary>         /// GetOleDbSchemaTable(OleDbSchemaGuid.Columns,new Object[]{null,null, strTable, null});         /// </summary>         /// <returns></returns>         private DataTable setTable()         {             DataTable dt = new DataTable();             dt.Columns.Add("id",typeof(int));             dt.Columns.Add("name", typeof(string));             dt.Rows.Add(1, "tables");//工作表             dt.Rows.Add(2, "Columns");             //dt.Rows.Add(3, "");             //dt.Rows.Add(4, "");             //dt.Rows.Add(5, "");             //dt.Rows.Add(6, "");                 return dt;         }           /// <summary>         /// /         /// </summary>         public ExcelFileForm()         {             InitializeComponent();         }         /// <summary>         ///         /// </summary>         /// <param name="sender"></param>         /// <param name="e"></param>         private void ExcelFileForm_Load(object sender, EventArgs e)         {             this.comboBox1.DataSource = setTable();             this.comboBox1.DisplayMember = "name";             this.comboBox1.ValueMember = "id";         }         /// <summary>         ///         /// </summary>         /// <param name="sender"></param>         /// <param name="e"></param>         private void button1_Click(object sender, EventArgs e)         {             openFileDialog1.InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.Desktop);             //JPEG Files (*.jpeg)|*.jpeg|PNG Files (*.png)|*.png|JPG Files (*.jpg)|*.jpg|GIF Files (*.gif)|*.gif             openFileDialog1.FileName = "";             openFileDialog1.Filter = "Excel 2000-2003 files(*.xls)|*.xls|Excel 2007 files (*.xlsx)|*.xlsx";//|(*.xlsx)|*.xlsx Image Files(*.BMP;*.JPG;*.GIF)|*.BMP;*.JPG;*.GIF|All files (*.*)|*.*  txt files (*.txt)|*.txt|All files (*.*)|*.*"             openFileDialog1.FilterIndex = 1;             openFileDialog1.RestoreDirectory = true;             if (openFileDialog1.ShowDialog() == DialogResult.OK)             {                 if (!openFileDialog1.FileName.Equals(String.Empty))                 {                         //connectionString = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + openFileDialog1.FileName + ";Extended Properties=Excel 8.0;";                     fileurl = openFileDialog1.FileName;                       string extension = Path.GetExtension(fileurl);  //GetFileNameWithoutExtension                     this.textBox1.Text = openFileDialog1.FileName;                     if (extension == ".xls") //extension==".xls";                     {                         connectionString = @"Provider=Microsoft.Jet.OLEDB.4.0;" +                         "Data Source=" + fileurl + ";" +                         @"Extended Properties=" + "\"Excel 8.0;HDR=YES;\"";                     }                     else if (extension==".xlsx")//extension==".xlsx";                     {                         connectionString = @"Provider=Microsoft.ACE.OLEDB.12.0;" +                         "Data Source=" + fileurl + ";" +                         @"Extended Properties=" + "\"Excel 12.0;HDR=YES;\"";                     }                 }             }         }         /// <summary>         /// TABLE_CATALOG,TABLE_SCHEMA,TABLE_NAME,TABLE_TYPE,TABLE_GUID,DESCRIPTION,TABLE_PROPID,DATE_CREATED,DATE_MODIFIED         /// TABLE_CATALOG,TABLE_SCHEMA,TABLE_NAME,COLUMN_NAME,COLUMN_GUID,COLUMN_PROPID,ORDINAL_POSITION,COLUMN_HASDEFAULT,COLUMN_DEFAULT,COLUMN_FLAGS,IS_NULLABLE,DATA_TYPE,TYPE_GUID,CHARACTER_MAXIMUM_LENGTH,CHARACTER_OCTET_LENGTH,NUMERIC_PRECISION,NUMERIC_SCALE,DATETIME_PRECISION,CHARACTER_SET_CATALOG,CHARACTER_SET_SCHEMA,CHARACTER_SET_NAME,COLLATION_CATALOG,COLLATION_SCHEMA,COLLATION_NAME,DOMAIN_CATALOG,DOMAIN_SCHEMA,DOMAIN_NAME,DESCRIPTION         /// </summary>         /// <param name="sender"></param>         /// <param name="e"></param>         private void button2_Click(object sender, EventArgs e)         {             System.Data.OleDb.OleDbConnection ExcelConnection = new System.Data.OleDb.OleDbConnection(connectionString);             ExcelConnection.Open();             //dtTables = ExcelConnection.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, new object[] { null, null, null, "TABLE" });             //dtTables = ExcelConnection.GetOleDbSchemaTable(OleDbSchemaGuid.Columns, new object[] { null, null, null, "Sheet1$" });             //dtTables = ExcelConnection.GetSchema("tables");             //this.dataGridView1.DataSource = dtTables;             //ExcelConnection.Close();             //this.textBox2.Text = GetColumnNames(dtTables);                 GetTablesList();             this.dataGridView2.DataSource= ReadExcelFile().Tables[0];           }         /// <summary>         ///         /// </summary>         /// <param name="table"></param>         /// <returns></returns>         public static string GetColumnNames(System.Data.DataTable table)         {             if (table != null)             {                 List<string> lstColumn = new List<string>();                   foreach (System.Data.DataColumn col in table.Columns)                 {                     lstColumn.Add(col.ColumnName);                 }                   return String.Join(",", lstColumn.ToArray());             }               return string.Empty;             //foreach (DataRow row in table.Rows)             //{             //    foreach (DataColumn column in table.Columns)             //    {             //        ColumnName = column.ColumnName;             //        ColumnData = row[column].ToString();             //    }             //}         }         /// <summary>         ///         /// </summary>         /// <param name="sender"></param>         /// <param name="e"></param>         private void dataGridView1_CellDoubleClick(object sender, DataGridViewCellEventArgs e)         {           }         /// <summary>         ///         /// </summary>         private void GetTablesList()         {             try             {                 cn = new OleDbConnection(connectionString);                 cn.Open();                 dtTables = cn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, new object[] { null, null, null, "TABLE" });                 this.dataGridView3.DataSource = dtTables;                 //dataGridView1.ReadOnly = true;                 cn.Close();             }             catch (System.Data.OleDb.OleDbException myException)             {                 for (int i = 0; i < myException.Errors.Count; i++)                 {                     MessageBox.Show("Index #" + i + "\n" +                     "Message: " + myException.Errors[i].Message + "\n" +                     "Native: " +         myException.Errors[i].NativeError.ToString() + "\n" +                     "Source: " + myException.Errors[i].Source + "\n" +                     "SQL: " + myException.Errors[i].SQLState + "\n");                 }             }               GetColumnsList();         }         /// <summary>         ///         /// </summary>         private void GetColumnsList()         {             try             {                 if (cm == null)                     cm = (CurrencyManager)this.BindingContext[dtTables];                   cm.PositionChanged += new EventHandler(cm_PositionChanged);                   int r = cm.Position;                   String strTable = dtTables.Rows[r]["TABLE_NAME"].ToString();                 cn = new OleDbConnection(connectionString);                 cn.Open();                 dtColumns = cn.GetOleDbSchemaTable(OleDbSchemaGuid.Columns, new Object[] { null, null, strTable, null });//字段名                 dvColumns = new DataView(dtColumns);                 dvColumns.Sort = "ORDINAL_POSITION";                 dataGridView1.DataSource = dvColumns;                 //dataGridView1.ReadOnly = true;                 cn.Close();                   this.textBox2.Text = GetColumnNames(dtColumns);             }             catch (Exception ex)             {                 ex.Message.ToString();             }         }         /// <summary>         ///         /// </summary>         /// <param name="sender"></param>         /// <param name="e"></param>         private void cm_PositionChanged(object sender, System.EventArgs e)         {            GetColumnsList();         }           private void comboBox1_SelectedValueChanged(object sender, EventArgs e)         {                       }         /// <summary>         ///         /// </summary>         /// <param name="dt2format"></param>         private void FormatTablesGrid(DataTable dt2format)         {             DataGridTableStyle gs = new DataGridTableStyle();             gs.MappingName = dt2format.TableName;               DataGridColumnStyle cs = new DataGridTextBoxColumn();               cs.MappingName = "TABLE_NAME";             cs.HeaderText = "Table Name";             cs.Width = 75;               gs.GridColumnStyles.Add(cs);               cs = new DataGridTextBoxColumn();             cs.MappingName = "TABLE_TYPE";             cs.HeaderText = "Table Type";             cs.Width = 75;               gs.GridColumnStyles.Add(cs);               CurrencyManager cm = (CurrencyManager)this.BindingContext[dt2format];               PropertyDescriptor pd = cm.GetItemProperties()["DATE_CREATED"];               cs = new DataGridTextBoxColumn(pd, "d");             cs.MappingName = "DATE_CREATED";             cs.HeaderText = "Date Created";             cs.Width = 75;               gs.GridColumnStyles.Add(cs);               cm = (CurrencyManager)this.BindingContext[dt2format];             pd = cm.GetItemProperties()["DATE_MODIFIED"];               cs = new DataGridTextBoxColumn(pd, "d");             cs.MappingName = "DATE_MODIFIED";             cs.HeaderText = "Date Modified";             cs.Width = 75;               gs.GridColumnStyles.Add(cs);               //dataGridView1.TabIndex.Add(gs);             button2.Enabled = false;           }         /// <summary>         /// http://www.codeproject.com/Tips/705470/Read-and-Write-Excel-Documents-Using-OLEDB         /// </summary>         /// <returns></returns>         private 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"] = fileurl;               // XLS - Excel 2003 and Older             //props["Provider"] = "Microsoft.Jet.OLEDB.4.0";             //props["Extended Properties"] = "Excel 8.0;";//HDR=Yes;IMEX=1             //props["Data Source"] = fileurl;             //fileurl = this.textBox1.Text.Trim();             string extension = Path.GetExtension(fileurl);             if (extension == ".xls") //extension==".xls";             {                 connectionString = @"Provider=Microsoft.Jet.OLEDB.4.0;" +                 "Data Source=" + fileurl + ";" +                 @"Extended Properties=" + "\"Excel 8.0;HDR=YES;\"";                   // XLS - Excel 2003 and Older                 props["Provider"] = "Microsoft.Jet.OLEDB.4.0";                 props["Extended Properties"] = "Excel 8.0";//HDR=Yes;IMEX=1                 props["Data Source"] = fileurl;             }             else if (extension == ".xlsx")//extension==".xlsx";             {                 connectionString = @"Provider=Microsoft.ACE.OLEDB.12.0;" +                 "Data Source=" + fileurl + ";" +                 @"Extended Properties=" + "\"Excel 12.0;HDR=YES;\"";                 // XLSX - Excel 2007, 2010, 2012, 2013                 props["Provider"] = "Microsoft.ACE.OLEDB.12.0";                 props["Data Source"] = fileurl;                 props["Extended Properties"] = "Excel 12.0 XML"; //Excel 12.0 XML                               }               StringBuilder 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();         }         /// <summary>         /// 创建工作表table1         /// </summary>         private 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 );";//创建工作表table1 及表头                 cmd.ExecuteNonQuery();                   cmd.CommandText = "INSERT INTO [table1](id,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();             }         }         /// <summary>         /// 读工作表         /// </summary>         /// <returns></returns>         private DataSet ReadExcelFile()         {             DataSet ds = new DataSet();               string connectionString = GetConnectionString();               try             {                 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();                 }               }             catch (Exception ex)             {                 ex.Message.ToString();             }             return ds;         }         /// <summary>         /// 添加一个新工作表         /// </summary>         /// <param name="sender"></param>         /// <param name="e"></param>         private void button3_Click(object sender, EventArgs e)         {             WriteExcelFile();         }         /// <summary>         /// 查询值         /// </summary>         /// <param name="sender"></param>         /// <param name="e"></param>         private void button4_Click(object sender, EventArgs e)         {             //create a string for the query               string ExcelQuery;               //Sheet1 is the sheet name             //create the query:             //read column with heading A from the Excel file             ArrayList ad = new ArrayList();             ExcelQuery = "SELECT * FROM [Sheet1$] WHERE 序号=5"; // from Sheet1";                     DataSet ds = new DataSet();             using (OleDbConnection conn = new OleDbConnection(connectionString))             {                 //1.                 OleDbCommand cmd = new OleDbCommand(ExcelQuery, conn);                 conn.Open();                 OleDbDataReader myReader = cmd.ExecuteReader();                 if (myReader.Read())                 {                     ad.Add(myReader[0].ToString()+","+myReader[1].ToString()+","+myReader[2].ToString()+","+myReader[3].ToString()+","+myReader[4].ToString());                 }                  this.textBox2.Text= String.Join(",", ad.ToArray());                       //2.                 //OleDbDataAdapter command = new OleDbDataAdapter(ExcelQuery, connectionString);                 //command.Fill(ds, "ds");                 //dataGridView1.DataSource = ds.Tables[0];             }                       }       }      }

　　数据类型：

 

Short	System.Int16	2
Long	System.Int32	3
Single	System.Single	4
Double	System.Double	5
Currency	System.Decimal	6
DateTime	System.DateTime	7
Bit	System.Boolean	11
Byte	System.Byte	17
GUID	System.Guid	72
BigBinary	System.Byte[]	204
LongBinary	System.Byte[]	205
VarBinary	System.Byte[]	204
LongText	System.String	203
VarChar	System.String	202
Decimal	System.Decimal	131

/*
MetaDataCollections
DataSourceInformation
DataTypes
Restrictions
ReservedWords
Columns
Indexes
Procedures
Tables
Views
*/