///& lt; Summary & gt
///The summary description of the exported file.
///function: convert the data in DataSet into Excel file.
///Description: Export an Excel file.
///Remarks: Please refer to the COM component corresponding to Office. The method of exporting an Excel object needs to call some of its methods and properties.
///& lt; /summary & gt;
Common class export file
{
Private string filePath =
Public export file (string excel_path)
{
//
// TODO: Add constructor logic here.
//
filePath = excel _ path
}
///& lt; Summary & gt
///Export the specified data set to an Excel file.
///& lt; /summary & gt;
///& lt; param name = " dt " & gt& lt/param & gt;
///& lt; returns & gt& lt/returns & gt;
public bool ExportToExcel(System。 Data set ds, string report name)
{
If (ds. Table [0]. Row. Count == 0)
{
MessageBox。 Show ("data set is empty");
}
Microsoft . office . interop . excel . _ Application XL app = new Application class();
Workbook xlbook = xlapp. workbooks . Add(true);
Worksheet xlsheet = (worksheet) xlbook Worksheet [1];
Range Range = XL sheet . get _ Range(XL app。 Cells [1, 1], xlapp. Cell [1, ds. tables[0]. columns . count]);
Range. MergeCells = true
xlapp。 active cell . formula 1c 1 = report name;
xlapp。 ActiveCell . Font.Size = 20
xlapp。 ActiveCell . Font.Bold = true
xlapp。 active cell . horizontal alignment = Microsoft。 office . interop . excel . constants . XL center;
int colIndex = 0;
int RowIndex = 2;
//Start writing the title of each column.
Foreach (DataColumn dc in ds. Table [0]. Column)
{
colindex++;
xlsheet。 Cell [RowIndex, colIndex] = dc. Title;
}
//Start writing.
int RowCount = ds。 tables[0]. rows . count; //number of rows
for(int I = 0; I & ltRowCounti++)
{
rowindex++;
int ColCount = ds。 Table [0]. columns. count; //Number of columns
for(colIndex = 1; colIndex & lt= ColCountcolIndex++)
{
xlsheet。 Cell [RowIndex, colIndex] = ds. Table [0]. Line [i] [colindex-1]; //dg[i,colIndex- 1];
xlsheet。 Cell. Column width = ds. Table [0]. Line [i][colIndex-1]. ToString()。 Length;
}
}
xlbook。 Saved = true
xlbook。 SaveCopyAs(file path);
xlapp。 quit();
GC。 collect();
Return true
}
public bool ExportToExcelOF(System。 Data set ds, string report name)
{
If (ds. Table [0]. Row. Count == 0)
{
MessageBox。 Show ("data set is empty");
}
string FileName = filePath
//system. DataTable dt = new system. data . DataTable();
FileStream objFileStream
StreamWriter objStreamWriter
string strLine =
ObjFileStream = new file stream (file name, file mode. OpenOrCreate,FileAccess。 Write);
objStreamWriter = new StreamWriter(objFileStream,System。 text . encoding . unicode);
strLine = ReportName
objStreamWriter。 WriteLine(strLine);
strLine =
for(int I = 0; Me & ltds. Table [0]. columns. count; i++)
{
strLine = strLine + ds。 Table [0]. columns[I]. column name . tostring()+" "+Convert。 Tochar (9);
}
objStreamWriter。 WriteLine(strLine);
strLine =
for(int I = 0; Me & ltds. tables[0]. rows . count; i++)
{
strLine = strLine+(I+ 1)+Convert。 Tochar (9);
for(int j = 1; j & ltds。 Table [0]. columns. count; j++)
{
strLine = strLine + ds。 Table [0]. Line [i][j] ToString() + Convert。 Tochar (9);
}
objStreamWriter。 WriteLine(strLine);
strLine =
}
objStreamWriter。 close();
objFileStream。 close();
//Microsoft . office . interop . excel . _ Application XL app = new Application class();
//workbook xlbook = xlapp. workbooks . Add(true);
//worksheet xlsheet = (worksheet) xlbook. Worksheet [1];
//Range Range = XL sheet . get _ Range(XL app。 Cells [1, 1], xlapp. Cell [1, ds. tables[0]. columns . count]);
//range. entire column . AutoFit();
//xlapp。 quit();
Return true
}
}