[]
Gets or sets the string displayed in PivotTable cells that contain null values when DisplayNullString is true.
The default value is an empty string ("").
string NullString { get; set; }
Property NullString As String
worksheet.Range["A1:B4"].Value = new object[,] {
{"Name", "Value"},
{"A", 100},
{"B", null},
{"A", 200}
};
IPivotCache pivotCache = workbook.PivotCaches.Create(worksheet.Range["A1:B4"]);
IPivotTable pivotTable = worksheet.PivotTables.Add(pivotCache, worksheet.Range["D1"], "SalesPivot");
pivotTable.DisplayNullString = true;
pivotTable.NullString = "(blank)";
string nullString = pivotTable.NullString;