如何使用C#将数据插入到excel表中？
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how to insert data into excel sheet using C#?
提问by chitra
i want to create new excel sheet and insert data into it, from string array. i used the following code to create, now i want to insert data.
我想从字符串数组创建新的 Excel 工作表并将数据插入其中。我使用以下代码创建，现在我想插入数据。
Excel.Application xlApp;
Excel.Workbook xlWorkBook;
Excel.Worksheet xlWorkSheet;
object misValue = System.Reflection.Missing.Value;
xlApp = new Excel.Application();
//xlApp = new Excel._Application.ApplicationClass();
xlWorkBook = xlApp.Workbooks.Add(misValue);
xlWorkSheet = (Excel.Worksheet)xlWorkBook.Worksheets.get_Item(1);
xlWorkSheet.Cells[1, 1] = "http://csharp.net-informations.com";
xlWorkBook.SaveAs("csharp-Excel.xls", Excel.XlFileFormat.xlWorkbookNormal, misValue, misValue, misValue, misValue, Excel.XlSaveAsAccessMode.xlExclusive, misValue, misValue, misValue, misValue, misValue);
xlWorkBook.Close(true, misValue, misValue);
xlApp.Quit();
releaseObject(xlWorkSheet);
releaseObject(xlWorkBook);
releaseObject(xlApp);
}
private void releaseObject(object obj)
{
try
{
System.Runtime.InteropServices.Marshal.ReleaseComObject(obj);
obj = null;
}
catch (Exception ex)
{
obj = null;
MessageBox.Show("Exception Occured while releasing object " + ex.ToString());
}
finally
{
GC.Collect();
}
}
回答by Mutu Yolbulan
private void ExportToExcel(string fileName, DataGridView dgv) //Exports the given dataGridView to Excel with the given fileName
{
Excel.Application xlApp;
Excel.Workbook xlWorkBook;
Excel.Worksheet xlWorkSheet;
object misValue = System.Reflection.Missing.Value;
xlApp = new Excel.Application();
xlWorkBook = xlApp.Workbooks.Add(misValue);
xlWorkSheet = (Excel.Worksheet)xlWorkBook.Worksheets.get_Item(1);
int i = 0;
int j = 0;
DataTable dtExcelTable = GetDataTableForExcel(dgv);
for (i = 0; i < dtExcelTable.Columns.Count; i++)
{
xlWorkSheet.Cells[1, i + 1] = dtExcelTable.Columns[i].ColumnName;
}
for (i = 0; i < dtExcelTable.Rows.Count; i++)
{
for (j = 0; j < dtExcelTable.Columns.Count; j++)
{
xlWorkSheet.Cells[i + 2, j + 1] = dtExcelTable.Rows[i][j];
}
}
try
{
xlWorkBook.SaveAs(fileName + ".xls", Excel.XlFileFormat.xlWorkbookNormal, misValue, misValue, misValue, misValue, Excel.XlSaveAsAccessMode.xlExclusive, misValue, misValue, misValue, misValue, misValue);
xlWorkBook.Close(true, misValue, misValue);
xlApp.Quit();
releaseObject(xlWorkSheet);
releaseObject(xlWorkBook);
releaseObject(xlApp);
MessageBox.Show("Excel dosyan?z C:\" + fileName + ".xls uzant?s?nda yarat?ld?.");
}
catch (Exception ex)
{
MessageBox.Show("Bir sorun olu?tu, tekrar deneyiniz. Hata: " + ex.Message);
}
}
回答by simendsjo
Calling COM methods is very slow. If you plan to insert a lot of data, I recommend you fetch the entire range you need, set all values, and add it back:
调用 COM 方法非常慢。如果您打算插入大量数据，我建议您获取所需的整个范围，设置所有值，然后将其添加回来：
var range = xlWorkSheet.get_Range[firstCell, lastCell]; // or string range
var data = (object[,])range.get_Value(XlRangeValueDataType.xlRangeValueDefault);
// Set data here. Remember it's 1 based index, and row (y component) first
range.set_Value(data);
