/// <summary>
/// Function that generates random string.
/// </summary>
/// <param name="minLen">Minimal length.</param>
/// <param name="maxLen">Maximum length.</param>
/// <param name="useDigit">Value that indicates if numbers are included.</param>
/// <returns>String value.</returns>
public static string GetRandStr(int minLen, int maxLen, bool useDigit = false)
{
string valid = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
if (useDigit)
{
valid += "1234567890";
}
StringBuilder res = new StringBuilder();
int length = R.GetInt32(minLen, maxLen + 1);
for (int i = 0; i < length; i++)
{
res.Append(valid[R.GetInt32(valid.Length)]);
}
return(res.ToString());
}