12
13# endregion // Includes
14
15namespace MyLib.ExportData
16{
17 # region Summary
18
19 /**//// <summary>
20 /// Exports datatable to CSV or Excel format.
21 /// This uses DataSet's XML features and XSLT for exporting.
22 ///
23 /// C#.Net Example to be used in WebForms
24 /// -------------------------------------
25 /// using MyLib.ExportData;
26 ///
27 /// private void btnExport_Click(object sender, System.EventArgs e)
28 /// {
29 /// try
30 /// {
31 /// // Declarations
32 /// DataSet dsUsers = ((DataSet) Session["dsUsers"]).Copy( );
33 /// MyLib.ExportData.Export oExport = new MyLib.ExportData.Export("Web");
34 /// string FileName = "UserList.csv";
35 /// int[] ColList = {2, 3, 4, 5, 6};
36 /// oExport.ExportDetails(dsUsers.Tables[0], ColList, Export.ExportFormat.CSV, FileName);
37 /// }
38 /// catch(Exception Ex)
39 /// {
40 /// lblError.Text = Ex.Message;
41 /// }
42 /// }
43 /// </summary>
44
45 # endregion // Summary
46
47 public class ExportData
48 {
49 public enum ExportFormat : int {CSV = 1, Excel = 2}; // Export format enumeration
50 System.Web.HttpResponse response;
51 private string appType;
52
53 public ExportData()
54 {
55 appType = "Web";
56 response = System.Web.HttpContext.Current.Response;
57 }
58
59 public ExportData(string ApplicationType)
60 {
61 appType = ApplicationType;
62 if(appType != "Web" && appType != "Win") throw new Exception("Provide valid application format (Web/Win)");
63 if (appType == "Web") response = System.Web.HttpContext.Current.Response;
64 }
65
66 ExportDetails OverLoad : Type#1#region ExportDetails OverLoad : Type#1
67
68 // Function : ExportDetails
69 // Arguments : DetailsTable, FormatType, FileName
70 // Purpose : To get all the column headers in the datatable and
71 // exorts in CSV / Excel format with all columns
72
73 public void ExportDetails(DataTable DetailsTable, ExportFormat FormatType, string FileName)
74 {
75 try
76 {
77 if(DetailsTable.Rows.Count == 0)
78 throw new Exception("There are no details to export.");
79
80 // Create Dataset
81 DataSet dsExport = new DataSet("Export");
82 DataTable dtExport = DetailsTable.Copy();
83 dtExport.TableName = "Values";
84 dsExport.Tables.Add(dtExport);
85
86 // Getting Field Names
87 string[] sHeaders = new string[dtExport.Columns.Count];
88 string[] sFileds = new string[dtExport.Columns.Count];
89
90 for (int i=0; i < dtExport.Columns.Count; i++)
91 {
92 sHeaders[i] = dtExport.Columns[i].ColumnName;
93 sFileds[i] = dtExport.Columns[i].ColumnName;
94 }
95
96 if(appType == "Web")
97 Export_with_XSLT_Web(dsExport, sHeaders, sFileds, FormatType, FileName);
98 else if(appType == "Win")
99 Export_with_XSLT_Windows(dsExport, sHeaders, sFileds, FormatType, FileName);
100 }
101 catch(Exception Ex)
102 {
103 throw Ex;
104 }
105 }
106
107 #endregion // ExportDetails OverLoad : Type#1
108
109 ExportDetails OverLoad : Type#2
13# endregion // Includes
14
15namespace MyLib.ExportData
16{
17 # region Summary
18
19 /**//// <summary>
20 /// Exports datatable to CSV or Excel format.
21 /// This uses DataSet's XML features and XSLT for exporting.
22 ///
23 /// C#.Net Example to be used in WebForms
24 /// -------------------------------------
25 /// using MyLib.ExportData;
26 ///
27 /// private void btnExport_Click(object sender, System.EventArgs e)
28 /// {
29 /// try
30 /// {
31 /// // Declarations
32 /// DataSet dsUsers = ((DataSet) Session["dsUsers"]).Copy( );
33 /// MyLib.ExportData.Export oExport = new MyLib.ExportData.Export("Web");
34 /// string FileName = "UserList.csv";
35 /// int[] ColList = {2, 3, 4, 5, 6};
36 /// oExport.ExportDetails(dsUsers.Tables[0], ColList, Export.ExportFormat.CSV, FileName);
37 /// }
38 /// catch(Exception Ex)
39 /// {
40 /// lblError.Text = Ex.Message;
41 /// }
42 /// }
43 /// </summary>
44
45 # endregion // Summary
46
47 public class ExportData
48 {
49 public enum ExportFormat : int {CSV = 1, Excel = 2}; // Export format enumeration
50 System.Web.HttpResponse response;
51 private string appType;
52
53 public ExportData()
54 {
55 appType = "Web";
56 response = System.Web.HttpContext.Current.Response;
57 }
58
59 public ExportData(string ApplicationType)
60 {
61 appType = ApplicationType;
62 if(appType != "Web" && appType != "Win") throw new Exception("Provide valid application format (Web/Win)");
63 if (appType == "Web") response = System.Web.HttpContext.Current.Response;
64 }
65
66 ExportDetails OverLoad : Type#1#region ExportDetails OverLoad : Type#1
67
68 // Function : ExportDetails
69 // Arguments : DetailsTable, FormatType, FileName
70 // Purpose : To get all the column headers in the datatable and
71 // exorts in CSV / Excel format with all columns
72
73 public void ExportDetails(DataTable DetailsTable, ExportFormat FormatType, string FileName)
74 {
75 try
76 {
77 if(DetailsTable.Rows.Count == 0)
78 throw new Exception("There are no details to export.");
79
80 // Create Dataset
81 DataSet dsExport = new DataSet("Export");
82 DataTable dtExport = DetailsTable.Copy();
83 dtExport.TableName = "Values";
84 dsExport.Tables.Add(dtExport);
85
86 // Getting Field Names
87 string[] sHeaders = new string[dtExport.Columns.Count];
88 string[] sFileds = new string[dtExport.Columns.Count];
89
90 for (int i=0; i < dtExport.Columns.Count; i++)
91 {
92 sHeaders[i] = dtExport.Columns[i].ColumnName;
93 sFileds[i] = dtExport.Columns[i].ColumnName;
94 }
95
96 if(appType == "Web")
97 Export_with_XSLT_Web(dsExport, sHeaders, sFileds, FormatType, FileName);
98 else if(appType == "Win")
99 Export_with_XSLT_Windows(dsExport, sHeaders, sFileds, FormatType, FileName);
100 }
101 catch(Exception Ex)
102 {
103 throw Ex;
104 }
105 }
106
107 #endregion // ExportDetails OverLoad : Type#1
108
109 ExportDetails OverLoad : Type#2
110
111 // Function : ExportDetails
112 // Arguments : DetailsTable, ColumnList, FormatType, FileName
113 // Purpose : To get the specified column headers in the datatable and
114 // exorts in CSV / Excel format with specified columns
115
116 public void ExportDetails(DataTable DetailsTable, int[] ColumnList, ExportFormat FormatType, string FileName)
117 {
118 try
119 {
120 if(DetailsTable.Rows.Count == 0)
121 throw new Exception("There are no details to export");
122
123 // Create Dataset
124 DataSet dsExport = new DataSet("Export");
125 DataTable dtExport = DetailsTable.Copy();
126 dtExport.TableName = "Values";
127 dsExport.Tables.Add(dtExport);
128
129 if(ColumnList.Length > dtExport.Columns.Count)
130 throw new Exception("ExportColumn List should not exceed Total Columns");
131
132 // Getting Field Names
133 string[] sHeaders = new string[ColumnList.Length];
134 string[] sFileds = new string[ColumnList.Length];
135
136 for (int i=0; i < ColumnList.Length; i++)
137 {
138 if((ColumnList[i] < 0) || (ColumnList[i] >= dtExport.Columns.Count))
139 throw new Exception("ExportColumn Number should not exceed Total Columns Range");
140
141 sHeaders[i] = dtExport.Columns[ColumnList[i]].ColumnName;
142 sFileds[i] = dtExport.Columns[ColumnList[i]].ColumnName;
143 }
144
145 if(appType == "Web")
146 Export_with_XSLT_Web(dsExport, sHeaders, sFileds, FormatType, FileName);
147 else if(appType == "Win")
148 Export_with_XSLT_Windows(dsExport, sHeaders, sFileds, FormatType, FileName);
149 }
150 catch(Exception Ex)
151 {
152 throw Ex;
153 }
154 }
155
156 #endregion // ExportDetails OverLoad : Type#2
157
158 ExportDetails OverLoad : Type#3#region ExportDetails OverLoad : Type#3
159
160 // Function : ExportDetails
161 // Arguments : DetailsTable, ColumnList, Headers, FormatType, FileName
162 // Purpose : To get the specified column headers in the datatable and
163 // exorts in CSV / Excel format with specified columns and
164 // with specified headers
165
166 public void ExportDetails(DataTable DetailsTable, int[] ColumnList, string[] Headers, ExportFormat FormatType,
167 string FileName)
168 {
169 try
170 {
171 if(DetailsTable.Rows.Count == 0)
172 throw new Exception("There are no details to export");
173
174 // Create Dataset
175 DataSet dsExport = new DataSet("Export");
176 DataTable dtExport = DetailsTable.Copy();
177 dtExport.TableName = "Values";
178 dsExport.Tables.Add(dtExport);
179
180 if(ColumnList.Length != Headers.Length)
181 throw new Exception("ExportColumn List and Headers List should be of same length");
182 else if(ColumnList.Length > dtExport.Columns.Count || Headers.Length > dtExport.Columns.Count)
183 throw new Exception("ExportColumn List should not exceed Total Columns");
184
185 // Getting Field Names
186 string[] sFileds = new string[ColumnList.Length];
187
188 for (int i=0; i < ColumnList.Length; i++)
189 {
190 if((ColumnList[i] < 0) || (ColumnList[i] >= dtExport.Columns.Count))
191 throw new Exception("ExportColumn Number should not exceed Total Columns Range");
192
193 sFileds[i] = dtExport.Columns[ColumnList[i]].ColumnName;
194 }
195
196 if(appType == "Web")
197 Export_with_XSLT_Web(dsExport, Headers, sFileds, FormatType, FileName);
198 else if(appType == "Win")
199 Export_with_XSLT_Windows(dsExport, Headers, sFileds, FormatType, FileName);
200 }
201 catch(Exception Ex)
202 {
203 throw Ex;
204 }
205 }
206
207 #endregion // ExportDetails OverLoad : Type#3
208
209 ExportDetails OverLoad : Type#3
210
211 // Function : ExportDetails
212 // Arguments : DetailsTable, FormatType, FileName
213 // Purpose : To get all the column headers in the datatable and
214 // exorts in CSV / Excel format with all columns
215
216 public void ExportDetails(DataTableCollection DetailsTables, ExportFormat FormatType, string FileName)
217 {
218 try
219 {
220 string NewFileName;
221
222 foreach(DataTable DetailsTable in DetailsTables)
223 {
224 if(DetailsTable.Rows.Count == 0)
225 throw new Exception("There are no details to export.");
226
227 NewFileName = FileName.Substring(0,FileName.LastIndexOf("."));
228 NewFileName+= " - " + DetailsTable.TableName;
229 NewFileName+= FileName.Substring(FileName.LastIndexOf("."));
230
231 // Create Dataset
232 DataSet dsExport = new DataSet("Export");
233 DataTable dtExport = DetailsTable.Copy();
234 dtExport.TableName = "Values";
235 dsExport.Tables.Add(dtExport);
236
237 // Getting Field Names
238 string[] sHeaders = new string[dtExport.Columns.Count];
239 string[] sFileds = new string[dtExport.Columns.Count];
240
241 for (int i=0; i < dtExport.Columns.Count; i++)
242 {
243 sHeaders[i] = dtExport.Columns[i].ColumnName;
244 sFileds[i] = dtExport.Columns[i].ColumnName;
245 }
246
247 if(appType == "Web")
248 Export_with_XSLT_Web(dsExport, sHeaders, sFileds, FormatType, NewFileName);
249 else if(appType == "Win")
250 Export_with_XSLT_Windows(dsExport, sHeaders, sFileds, FormatType, NewFileName);
251 }
252 }
253 catch(Exception Ex)
254 {
255 throw Ex;
256 }
257 }
258
259 #endregion //ExportDetails OverLoad : Type#4
260
261 Export_with_XSLT_Web#region Export_with_XSLT_Web
262
263 // Function : Export_with_XSLT_Web
264 // Arguments : dsExport, sHeaders, sFileds, FormatType, FileName
265 // Purpose : Exports dataset into CSV / Excel format
266
267 private void Export_with_XSLT_Web(DataSet dsExport, string[] sHeaders, string[] sFileds, ExportFormat FormatType, string FileName)
268 {
269 try
270 {
271 // Appending Headers
272 response.Clear();
273 response.Buffer= true;
274
275 if(FormatType == ExportFormat.CSV)
276 {
277 response.ContentType = "text/csv";
278 response.AppendHeader("content-disposition", "attachment; filename=" + FileName);
279 }
280 else
281 {
282 response.ContentType = "application/vnd.ms-excel";
283 response.AppendHeader("content-disposition", "attachment; filename=" + FileName);
284 }
285
286 // XSLT to use for transforming this dataset.
287 MemoryStream stream = new MemoryStream( );
288 XmlTextWriter writer = new XmlTextWriter(stream, Encoding.Default);
289
290 CreateStylesheet(writer, sHeaders, sFileds, FormatType);
291 writer.Flush( );
292 stream.Seek( 0, SeekOrigin.Begin);
293
294 XmlDataDocument xmlDoc = new XmlDataDocument(dsExport);
295 XslTransform xslTran = new XslTransform();
296 xslTran.Load(new XmlTextReader(stream), null, null);
297
298 System.IO.StringWriter sw = new System.IO.StringWriter();
299 xslTran.Transform(xmlDoc, null, sw, null);
300
301 //Writeout the Content
302 response.Write(sw.ToString());
303 sw.Close();
304 writer.Close();
305 stream.Close();
306 response.End();
307 }
308 catch(ThreadAbortException Ex)
309 {
310 string ErrMsg = Ex.Message;
311 }
312 catch(Exception Ex)
313 {
314 throw Ex;
315 }
316 }
317
318 #endregion // Export_with_XSLT
319
320 Export_with_XSLT_Windows