public static string GetExcelData(ExcelTable table, DataTable data) { var jv = new JsonValue(); for (var i = 0; i < data.Rows.Count; i++) { var row = new JsonValue(); var ig = false; foreach (var col in table.Cols) { var v = data.Rows[i][col.ColIndex]; if (col.Name == "ID") { if (v is DBNull || Convert.ToInt32(v) == 0) { ig = true; break; } } switch (col.Type) { case "Int": var valInt = 0; try { valInt = Convert.ToInt32(v); } catch { } row[col.Name] = valInt; break; case "Float": var valFloat = 0f; try { valFloat = Convert.ToSingle(v); } catch { } row[col.Name] = valFloat; break; case "String": row[col.Name] = v == null ? "" : v.ToString(); break; case "DateTime": row[col.Name] = v == null ? "" : v.ToString(); break; } } if (!ig) { jv.Append(row); } //BREAK; } return(JsonWriter.Write(jv)); }