protected ILinksAnalysis ExtendFromWorkbookList(Range range)
{
if (range == null)
{
return(null);
}
StatusAvailable?.Invoke(this, new EventArgs <string>("Loading background processor ..."));
var nameList = range.GetNameList();
using (var newExcel = WorkbookProcessor.New(range.Application, true)) {
foreach (var item in nameList)
{
if (item is string path)
{
if (!File.Exists(path))
{
AddFileAccessError(path, "File not found.");
continue;
}
StatusAvailable?.Invoke(this, new EventArgs <string>($"Processing {path} ..."));
try {
newExcel.DoOnWorkbook(item, wb => ExtendFromWorkbook(wb));
}
catch (IOException ex) { AddFileAccessError(path, $"IOException: '{ex.Message}'"); }
finally {
StatusAvailable?.Invoke(this, new EventArgs <string>("Ready"));
}
}
}
}
return(this);
}
protected ILinksAnalysis ExtendFromWorksheet(Worksheet ws)
{
if (ws == null)
{
return(null);
}
var usedRange = ws.UsedRange;
for (var colNo = 1; colNo <= usedRange.Columns.Count; colNo++)
{
var percentage = 100 * colNo / usedRange.Columns.Count;
StatusAvailable?.Invoke(this,
new EventArgs <string>($"Searching {ws.Parent.Name}[{ws.Name}] ... ({percentage,3}%)"));
var lastRowNo = ws.Cells[ws.Rows.Count, colNo].End(Excel.XlDirection.xlUp).Row;
for (long rowNo = 1; rowNo <= lastRowNo; rowNo++)
{
var cell = usedRange[rowNo, colNo];
if (cell.Formula is string formula && formula.Length > 0 && formula[0] == '=')
{
var cellRef = ws.NewCellRef(cell as Range);
ParseFormula(cellRef, formula);
}
}
}
return(this);
}
protected static void OnStatusAvailable(object sender, string message) => StatusAvailable?.Invoke(sender, new EventArgs <string>(message));
