API for reading/writing Excel file having header
1. Open Excel file at Sheet1 and header range "A1:G2":
testFile = ExcelFile("Template_1.xlsx")
testFile.Open("Sheet1", "A1:G2")
2. Read data at 1st row:
testFile.Read(1)
3. Read data at filed "Name":
testFile.ReadByField("Name")
4. Write to filed "Name", at 1st row:
testFile.Write("Name", 1, "Person1")
5. Read data at field "Start Date:Coding" and "Start Date:Testing" where field "Name" has value "Person1" and field "Age" has value "1":
testFile.ReadByCondition(["Start Date:Coding", "Start Date:Testing"], {"Name":"Person1", "Age": "1"})