replace cell values within excel using excel.interop
我想扫描一个Excel表格，并用零代替社会安全号码的任何出现...我想使用Excel.Interop做到这一点，如果可能的话，但我现在对任何事情都是开放的......这里是我的一些代码...在过去的几个月里，我在桌子上敲着头...
// Get range and convert it to a string variable
Excel.Range _range =(Excel.Range)_excelApp.get_Range("A1:K1",Type.Missing);
// convert the value of our cells in our range
// to the string variable
string myString = _range.Cells.Value2.ToString();
// match any SSN e.g. 1236780909, 123-33-2445
if (Regex.IsMatch(myString, @"bd{3}bd{2}bd{4}"));
{
_range.Cells.Value2 = replaceSSN;
}
// save our workbook with a new name and create a backup
_excelWorkbook.SaveAs("Results.xls", Type.Missing, Type.Missing, Type.Missing, Type.Missing, true, Excel.XlSaveAsAccessMode.xlNoChange, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing);
// close workbook
_excelWorkbook.Close(false, Type.Missing, Type.Missing);
// send quit signal to app
_excelApp.Quit();
// report success
MessageBox.Show("File masked successfully.", "Mask Data", MessageBoxButtons.OK);
// release memory
//System.Runtime.InteropServices.Marshal.ReleaseComObject(_excelApp);
// change label back to being blank
lblActivity.Text = "";
}
The problem is here
string myString = _range.Cells.Value2.ToString();
And here
// match any SSN e.g. 1236780909, 123-33-2445
if (Regex.IsMatch(myString, @"bd{3}bd{2}bd{4}"));
{
_range.Cells.Value2 = replaceSSN;
}
I think you are misunderstanding what Value2 is, Its the array reprentation of the range you have defined above.
Excel.Range _range =(Excel.Range)_excelApp.get_Range("A1:K1",Type.Missing);
Value2 Property of the Range class,returns an array of values. what you need to do is perhaps declare a empty array and get the Value2 of the range, loop each item in the array and run the regex, if it finds a match replace the item in the array. Then you could set the array back to the Value2 of the Range, which will update the cells values.
EDIT: Please find some sample code below
var excelApp = new Application();
excelApp.Workbooks.Open("c:Test.xls",Type.Missing,Type.Missing,
Type.Missing,Type.Missing,
Type.Missing,Type.Missing,
Type.Missing,Type.Missing,
Type.Missing,Type.Missing,
Type.Missing,Type.Missing,
Type.Missing,Type.Missing);
var ws = excelApp.Worksheets;
var worksheet =(Worksheet) ws.get_Item("Sheet1");
Range range = worksheet.UsedRange;
// In the following cases Value2 returns different types
// 1. the range variable points to a single cell
// Value2 returns a object
// 2. the range variable points to many cells
// Value2 returns object[,]
object[,] values = (object[,])range.Value2;
for (int row = 1; row <= values.GetUpperBound(0); row++)
for (int col = 1; col <= values.GetUpperBound(1); col++)
{
string value = Convert.ToString(values[row, col]);
//Also used a different regex, found yours not to match on your given criteria
if (Regex.IsMatch(value, @"^d{3}-d{2}-d{4}$"))
{
range.Cells.set_Item(row,col,"0");
}
}
excelApp.Save("C:Out.xls");
excelApp.Quit();
Marshal.ReleaseComObject(worksheet);
Marshal.ReleaseComObject(ws);
Marshal.ReleaseComObject(excelApp);
在这里你可以对代码片段有一个小的理解，但我没有尝试过，所以它可能包含语法错误。
Excel.WorkSheet currentSheet = ApplicationInstance.ActiveSheet as Excel.Worksheet;
foreach(Exce.Range r1 in currentSheet.UsedRange)
{
if(Regex.IsMatch(r1.Value2.ToString(), @"bd{3}bd{2}bd{4}")) // check r1.Value2 should not be null
{
r1.Value2 = Your_New_Value;
}
}