I suggest a slightly revised version of your code. As a result, you can get a datatable from an IEnumerable with values of value type and strings.

public static DataTable ToDataTable(IEnumerable input)
{
DataTable dt = new DataTable(typeof(T).Name);

PropertyInfo[] properties = typeof(T).GetProperties(BindingFlags.Public | BindingFlags.Instance);

if (typeof(T).IsValueType || typeof(T) == typeof(System.String))
{
Type t = GetCoreType(typeof(T));
dt.Columns.Add(typeof(T).Name+”C”, t);
}
else
{
foreach (PropertyInfo property in properties)
{
Type t = GetCoreType(property.PropertyType);
dt.Columns.Add(property.Name, t);
}
}

foreach (T item in input)
{
if (typeof(T).IsValueType || typeof(T) == typeof(System.String))
{
dt.Rows.Add(item);
}
else
{
object[] values = new object[properties.Length];
for (int i = 0; i < properties.Length; i++)
{
values[i] = properties[i].GetValue(item, null);
}
dt.Rows.Add(values);
}
}
return dt;
}
public static Type GetCoreType(Type t)
{
if (t != null && IsNullable(t))
{
if (!t.IsValueType) { return t; }
else { return Nullable.GetUnderlyingType(t); }
}
else { return t; }
}
public static bool IsNullable(Type t)
{
return !t.IsValueType || (t.IsGenericType && t.GetGenericTypeDefinition() == typeof(Nullable));
}

Tee-Object and Invoke-Expression in PowerShell – Chinh Do

Tee-Object and Invoke-Expression in PowerShell – Chinh Do

Tee-Object and Invoke-Expression in PowerShell – Chinh Do

Hi Jay, Yeah I just saw that it stopped working around Jan 11 of this year. I haven’t looked into it but when I have some time I will take a look. Thanks

Hi Raja, Glad to hear you got it working. Chinh

I solved it. Hostname was not getting resolved for some reason, switched it to the IP address and it started working like a charm. Thanks

Tee-Object and Invoke-Expression in PowerShell – Chinh Do