public bool UIConvertSaveNewChangedStudy(StudyChangeData changedstudy) { //Here we took selected Study (Id#Cost) and separate on Id and Cost string[] SeparateIdFromCost = changedstudy.SelectedValue.Trim().Split(new char[] { '#' }); changedstudy.SelectedValue = SeparateIdFromCost[0]; //string Cost= SeparateIdFromCost[1]; // changedstudy.Cost = SeparateIdFromCost[1]; //The 1st parameter //Convertation of Cost form string into float. string notconvertcost = (changedstudy.ChangeDataCost.Contains(".") || changedstudy.ChangeDataCost.Contains(",")) ? changedstudy.ChangeDataCost.Replace(".", ",").Trim() : changedstudy.ChangeDataCost.Trim(); dalstudy.St_Cost = float.Parse(notconvertcost); //The second parameter dalstudy.St_Type = changedstudy.ChangeDataType; //The 3dh parametr dalstudy.St_Used = changedstudy.Used; //The 4th parameter dalstudy.St_SelectedStudy = Int32.Parse(changedstudy.SelectedValue); return(bll.BllChangeDataOfSelectedStudy(dalstudy.St_SelectedStudy, dalstudy.St_Type, dalstudy.St_Cost, dalstudy.St_Used)); }