/// <summary>
/// Prompts the user to provide a value as a long.
/// </summary>
/// <param name="caption">Title for the Input form.</param>
/// <param name="defaultValue">Default to be displayed in the textbox.</param>
/// <returns>Nullable value: long.</returns>
public static long? GetLong(string caption, string defaultValue)
{
using (InputForm inForm = new InputForm(caption, defaultValue))
{
if (inForm.ShowDialog() == DialogResult.Cancel) return null;
if (inForm.StringValue == string.Empty) return null;
try { return Int64.Parse(inForm.StringValue); }
catch { return null; }
}
}
/// <summary>
/// Standard modal DialogResult method used for simple user input (as a string).
/// </summary>
/// <param name="caption">Title for the Input form.</param>
/// <param name="defaultValue">Default to be displayed in the textbox.</param>
/// <returns>DialogResult, and updates the value of reference parameter
/// defaultValue if the result is DialogResult.OK.</returns>
public static DialogResult ShowDialog(string caption, ref string defaultValue)
{
using (InputForm inForm = new InputForm(caption, defaultValue))
{
if (inForm.ShowDialog() == DialogResult.OK)
{
defaultValue = inForm.StringValue;
return DialogResult.OK;
}
return DialogResult.Cancel;
}
}