GetItems case sensitive from SPList (SharePoint)

I have troubles with CAML Query and GetItems method from SPList.

I get a SPList from web context:

SPList docTypeList = _web.GetList(string.Format("{0}{1}", web.ServerRelativeUrl,                                            "DocumentType"));

The list contains multiple values.

I want to search in it only the value which has a field called DocumentType with the value "MyValue1". (case sensitive)

I am using the CAML Query:

var queryBuilder = new CAMLQueryBuilder();
            queryBuilder.AddComparison("DocumentType", CAMLQueryBuilder.COMPARISON_TYPE.Eq, "MyValue1");

var query = new SPQuery { Query = queryBuilder.GenerateCAML() };
SPListItemCollection queryResultItems = docTypeList.GetItems(query);

In this case it returns as result a record which has the field "DocumentType" having the value "myvalue1", it does not take care about string sensitive.

Is there a possibility to get Items considering sensitive cases?

Thanks for suggestions!

Solution

I found on sharepoint.stackexchange.com an answer:

It's all case insensitive, after getting the results, it is necessary to iterate through and do the case sensitivity checking.

Edit:
Because CAML Query is case-insensitive.

The solution was to filter the results from

SPListItemCollection queryResultItems = docTypeList.GetItems(query);

and check for case-sensitive.

I created a small method which does this.

private SPListItem FindCaseSensitive(string documentType, IEnumerable items)
{
    SPListItem foundItem = null;
    if (items == null) return null;

    foreach (var item in items)
    {
        var spItem = item as SPListItem;
        if (spItem == null) continue;

        var propertyValue = spItem["DocumentType"];
        if (!propertyValue.ToString().Equals(documentType)) continue;

        foundItem = spItem;
        break;
    }
    return foundItem;
}