/// <summary>
/// A method used to construct CamlQueryRoot instance using specified field name and value
/// with equal condition.
/// </summary>
/// <param name="fieldName">A parameter represents the field name.</param>
/// <param name="fieldValue">A parameter represents the field value.</param>
/// <returns>Returns the CamlQueryRoot instance.</returns>
public static CamlQueryRoot CreateQueryRoot(string fieldName, string fieldValue)
{
CamlQueryRoot root = new CamlQueryRoot();
root.Where = new LogicalJoinDefinition();
LogicalTestDefinition equal = new LogicalTestDefinition();
equal.FieldRef = new FieldRefDefinitionQueryTest();
equal.FieldRef.Name = fieldName;
ValueDefinition valueDef = new ValueDefinition();
valueDef.Type = "Text";
valueDef.Text = new string[] { fieldValue };
equal.Value = valueDef;
root.Where.Items = new object[1];
root.Where.Items[0] = equal;
root.Where.ItemsElementName = new ItemsChoiceType1[1];
root.Where.ItemsElementName[0] = ItemsChoiceType1.Eq;
return root;
}