How can I convert String to Int?

I have a `TextBoxD1.Text` and I want to convert it to an `int` to store it in a database.

How can I do this?

You need to parse the string, and you also need to ensure that it is truly in the format of an integer.

The easiest way is this:

int parsedInt = 0;
if (int.TryParse(TextBoxD1.Text, out parsedInt))
{
// Code for if the string was valid
}
else
{
// Code for if the string was invalid
}

int i = Convert.ToInt32(TextBoxD1.Text);

int.TryParse()

It won't throw if the text is not numeric.

int myInt = int.Parse(TextBoxD1.Text)

Another way would be:

bool isConvertible = false;
int myInt = 0;

isConvertible = int.TryParse(TextBoxD1.Text, out myInt);

The difference between the two is that the first one would throw an exception if the value in your textbox can't be converted, whereas the second one would just return false.

int x = 0;
int.TryParse(TextBoxD1.Text, out x);

The TryParse statement returns a boolean representing whether the parse has succeeded or not. If it succeeded, the parsed value is stored into the second parameter.

See *[Int32.TryParse Method (String, Int32)][1]* for more detailed information.

[1]:

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