Openxml Dropdownlist usind datavalidation

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C#3.5

DataValidations dataValidations1 = new DataValidations();

DataValidation dataValidation2 = new DataValidation() { Type = DataValidationValues.List, AllowBlank = true, ShowInputMessage = true, ShowErrorMessage = true, SequenceOfReferences = new ListValue<stringvalue>() { InnerText = "A4:B4" } };

Formula1 formula12 = new Formula1();

formula12.Text = "$A$1:$A$3";

dataValidations1.Append(dataValidation1);

worksheet1.Append(dataValidations1);


In the above code will add dropdownlist in excel .I've doubt for dropdown how they are adding values . pls suggest .

if my table having raja,ram,raju,bala,guna in list how should i add this in dropdown list ?
ListValue<stringvalue>