Extracting an entity class from a list.

Question

Hi,

Please would someone help me.  I have a list of a class (QaUserEntity) in a list called targetList. I want to loop through the list and extract each item individually so that I can get to the elements of the class so that I can populate a listbox with a single string.

This is what I have so far... The problem lies in the line of code 'userEntity = targetList.IndexOf(i);'  The i is highlighted and it tells me   -  Error CS1503 Argument 1: cannot convert from 'int' to 'QIAS.Business.Entities.QaUserEntity'

        private void LoadUserNames(List<QaUserEntity> targetList)
        {
            int listCount;
            string resultString = "";

            listCount = targetList.Count;
            for (int i = 0; i < listCount; i++)
            {
                QaUserEntity userEntity = new QaUserEntity();
                userEntity = targetList.IndexOf(i);
                resultString = userEntity.FirstName + " " + userEntity.Surname + " " + userEntity.LogonName + " " +  userEntity.UserID;

                lstResult.Items.Add(resultString);
            }
        }

Many Thanks,  

Sue

Answer 1

Hi,

the IndexOf() method gives you only the integer index of the object, not the List object itself. Instead, try

for (int i = 0; i < listCount; i++)
{
    resultString = targetList[i].FirstName + " " + targetList[i].Surname + " " + targetList[i].LogonName + " " +  targetList[i].UserID;

    lstResult.Items.Add(resultString);
}

If targetList is a generic List of QaUserEntity objects you can retrieve each element of that list by its index.

wizend

Answer 2

Brilliant! It worked! 

Many thanks,

Sue