对Excel操作时,由于使用权限的不同,可能对表格的操作权限也不一样。EXCEL提供了保护工作表以及允许编辑单元格功能。相应的在C#中就可以对Excel表格进行操作。
有两种方法可以实现:
第一种:
主要用Protect()方法保护工作表,Worksheet.Protection.AllowEditRanges设置允许编辑的单元格。
public void CreateExcel()
{
//创建一个Excel文件
Microsoft.Office.Interop.Excel.Application myExcel = new Microsoft.Office.Interop.Excel.Application();
Microsoft.Office.Interop.Excel.Workbook excelWorkbook = null;
Microsoft.Office.Interop.Excel.Worksheet excelSheet = null;
myExcel.Application.Workbooks.Add(true);
//让Excel文件可见
myExcel.Visible = true;
myExcel.Cells[1, 4] = "普通报表";
//逐行写入数据
for (int i = 0; i < 11; i++)
{
for (int j = 0; j < 7; j++)
{
//以单引号开头,表示该单元格为纯文本
myExcel.Cells[2 + i, 1 + j] = "'" + i;
}
}
try
{
string excelTemp ="c:\\a.xls";
//excelWorkbook = myExcel.Workbooks[1];
excelWorkbook = myExcel.ActiveWorkbook;
excelSheet = (Microsoft.Office.Interop.Excel.Worksheet)excelWorkbook.ActiveSheet;
//设定允许操作的单元格
Microsoft.Office.Interop.Excel.AllowEditRanges ranges =excelSheet.Protection.AllowEditRanges;
ranges.Add("Information", myExcel.Application.get_Range("B2", "B2"), Type.Missing);
//保护工作表
excelSheet.Protect("MyPassword", Type.Missing, Type.Missing, Type.Missing,
Type.Missing, Type.Missing, Type.Missing, Type.Missing,
Type.Missing, Type.Missing, Type.Missing, Type.Missing,
Type.Missing, true, Type.Missing, Type.Missing);
//Realease the com object
System.Runtime.InteropServices.Marshal.ReleaseComObject(excelSheet);
excelSheet = null;
//Save the result to a temp path
excelWorkbook.SaveAs(excelTemp, Excel.XlFileFormat.xlWorkbookNormal, null,null,false,
false, Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlNoChange,
Type.Missing, Type.Missing, Type.Missing,Type.Missing,Type.Missing);
}
catch (Exception ex)
{
throw;
}
finally
{
if (excelWorkbook != null)
{
System.Runtime.InteropServices.Marshal.ReleaseComObject(excelWorkbook);
excelWorkbook = null;
}
if (myExcel != null)
{
myExcel.Workbooks.Close();
myExcel.Quit();
System.Runtime.InteropServices.Marshal.ReleaseComObject(myExcel);
myExcel = null;
}
GC.Collect();
}
}
PS:借用此方法我写了个循环来设定单元格保护,没想到一直在报HRESULT:0x800A03EC 的一个异常,郁闷。
经过一番折腾,发现 AllowEditRanges.Add方法的第一个参数名是不能够重复的,写循环的时候没注意。
第二种:
用locked属性,设置Locked = false 的区域就可编辑的区域
worksheet.get_Range(worksheet.Cells[1, 1], worksheet.Cells[10, 10]).Locked = false;
//保护工作表
worksheet.Protect("MyPassword", Type.Missing, Type.Missing, Type.Missing,
Type.Missing, Type.Missing, Type.Missing, Type.Missing,
Type.Missing, Type.Missing, Type.Missing, Type.Missing,
Type.Missing, true, true, true); |