CODEWITHSUNDEEP
c#.net
user3342256
user3342256

Reputation: 1290

Converting From Minutes to Milliseconds, then to Int

I am trying to run the following conversion, which results in an invalid cast exception

specified cast is not valid

settings.ActionTimer = Convert.ToInt32(TimeSpan.FromMinutes((double)ActionTimerComboBox.SelectedValue).TotalMilliseconds);

What this is attempting is the following:

  1. Take the value of ActionTimerComboBox.SelectedValue, which in this case is "13" and convert it from object to double so that TimeSpan.FromMinutes() can be applied to it.
  2. Convert "13 minutes" to milliseconds.
  3. Update int settings.ActionTimer to the millisecond converted value, which should be "780000".

How can I accomplish this?

Upvotes: 1

Views: 1966

Answers (3)

Raj
Raj

Reputation: 674

This exception is coming from this statement:

((double)ActionTimerComboBox.SelectedValue)

Object to Double conversion is throwing invalid cast exception. Either convert this object to string first and then convert it to double.

((double)ActionTimerComboBox.SelectedValue.toString());

Or, You can also use below code:

var val = ActionTimerComboBox.SelectedValue;
if (val is IConvertible)
{
 double d = ((IConvertible)val).ToDouble(null);
}

Upvotes: 0

sujith karivelil
sujith karivelil

Reputation: 29036

Everything looks fine except the conversion from ActionTimerComboBox.SelectedValue to double. And that's the error message also saying. you have to use something like the following:

string comboSelectedValue = ActionTimerComboBox.SelectedValue;
double selectedVal =0.0;
if(double.TryParse(comboSelectedValue, out selectedVal)){
    settings.ActionTimer = (int)TimeSpan.FromMinutes(selectedVal).TotalMilliseconds;
    Console.WriteLine(TimeSpan.FromMinutes(selectedVal).TotalMilliseconds);
}
else
{
    Console.WriteLine("Error in conversion");
}

Working Example HERE. This Link may helps you to know more about type casting.

Upvotes: 3

Reza Ebadi
Reza Ebadi

Reputation: 605

ActionTimerComboBox.SelectedValue is returning string you can't cast it as double, you should try double.Parse(), double.TryParse() Or Convert class as you used here. -sorry couldn't comment

Upvotes: 2

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