Question

var objTypeIndex = from u in context.sistema_DocType_Index where u.docTypeId == id select u.indexId;
indexIds = objTypeIndex.ToList();
int count = indexIds.Count();

string[] names = new string[] {};
int i = 0;                    

foreach (int indexId in indexIds)
{
    //resgata nome do indice e armazena em um array
    string strIndiceID = indexId.ToString();
    int indiceID = Convert.ToInt32(strIndiceID);
    var objIndexName = from u in context.sistema_Indexes where u.id == indiceID select u.idName;
    name = 

    names[i] = objIndexName.First();

    i++;
}

This line above the last:
names[i] = objIndexName.First();

gives the following error:

System.IndexOutOfRangeException: Index was outside the bounds of the array.

I know what that means.. I just can´t figure out why.

Answer 1

Replace

string[] names = new string[] {};

By

var names = new List<string>();

And instead of

names[i] = objIndexName.First();

Use

names.Add(objIndexName.First());

Then, you will be able to get your array as follow:

var nameArray = names.ToArray();