How C # Gets a collection of sheet pages (worksheets) in an Excel workbook

#region get a collection of sheet pages (sheets) in an Excel workbook
02.///<summary>
03.///get a collection of sheet pages (worksheets) in an Excel workbook
04.///</summary>
05.///<param name= "excelfile" >excel filename and path, eg:c:\users\jk\desktop\ import Test .xls</param>
06.///<returns>sheet page Name Collection </returns>
07.private string[] Getexcelsheetnames (String fileName)
08.{
OleDbConnection objconn = null;
System.Data.DataTable dt = null;
One try.
12. {
String connstring=string. Empty;
String FileType =filename.substring (Filename.lastindexof ("."));
if (FileType = ". xls")
connstring = "Provider=Microsoft.Jet.OLEDB.4.0;" +
"Data source=" + FileName + "; Extended Properties=excel 8.0; ";
Else//.xlsx
connstring = "provider=microsoft.ace.oledb.12.0" + "Data source=" + FileName + ";" + "; Extended properties=\ "Excel 12.0; Hdr=yes;imex=1\ "";
20.//Create Connection object
objconn = new OleDbConnection (connstring);
22.//Open database connection
objConn.Open ();
24.//Get data table containing data schema
DT = objconn.getoledbschematable (OleDbSchemaGuid.Tables, NULL);
if (dt = null)
27. {
return null;
29.}
string[] excelsheets = new String[dt. Rows.Count];
int i = 0;
32.//Add sheet name to string array
foreach (DataRow row in dt. Rows)
34. {
String strsheettablename = row["table_name"]. ToString ();
36.//Filter Invalid SheetName
Strsheettablename.contains ("$") &&strsheettablename.replace ("'", ""). EndsWith ("$"))
38. {
Excelsheets[i] = strsheettablename.substring (0, strsheettablename.length-1);
40.}
i++;
42.}
Excelsheets return;
44.}
catch (Exception ex)
46. {
MessageBox.Show (ex. ToString ());
return null;
49.}
Finally
51. {
52.//Clean up
if (objconn!= null)
54. {
Objconn.close ();
Objconn.dispose ();
57.}
!=. if (DT-null)
59. {
DT. Dispose ();
61.}
62.}
63.}
#endregion

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