Question How to convert string to double?

[raysefo]

hi,

I want to convert string to double.

Dim str As String = "1.5432"
Dim num As Double = Convert.ToDouble(str)

num should be 1.5432 but i get 15432

How can i get as it is in the string?
thanks in advance.

Best Regards

 

[kulrom]

Use Double.Parse Method (System)

Dim str As String = "1.5432"
Dim num As Double = Double.Parse(str)

 

[raysefo]

But it still seems like the same when i did it like the way u do above?

Dim num As Double = Double.Parse(str)

num still seems like 15432

 

[lordofduct]

can you show us the code you are using to do the conversion in full? Because both Convert.ToDouble and Double.Parse act the same and will consider decimal points.

 

[raysefo]

Actually it is like 15432.0

 

[raysefo]

I m writing it in c# sorry for that.

string currencyNameUSA = xn["CurrencyName"].InnerText;
string sel = xn["ForexSelling"].InnerText;
double sellingUSA = Double.Parse(sel);

sellingUSA is 15432.0

 

[JuggaloBrotha]

I m writing it in c# sorry for that.

string currencyNameUSA = xn["CurrencyName"].InnerText;
string sel = xn["ForexSelling"].InnerText;
double sellingUSA = Double.Parse(sel);

sellingUSA is 15432.0

Since it's coming from XML you may or may not know if it can even be converted to a Double or not, so I would recommend using the Double.TryParse() method for that.

Also this is a vb.net forum, convert your code to vb.net before posting it in the future

 

[raysefo]

I tried Double.TryParse() but nothing changed , still getting 15432.0.

 

[JuggaloBrotha]

Right, because the default value for the decimal is .0 so if the number is "15432" and you convert it to a double the value stored is '15432.0'. When you display it to the user you can format it to not show the '.0' at that time.

 

[kulrom]

Is it possible that your input is not 1.5432 ? Otherwise it should work.
Test this code below to see that it works:

Dim str As String = "1.5432"
Dim num As Double = Double.Parse(str)
Console.WriteLine("Parsed value is: " & num.ToString)

 

[raysefo]

The number is "1.5432" and i need it 1.5432

 

[kulrom]

Actually it is like 15432.0

Is it 15432.0 or 1.5432?

 

[JuggaloBrotha]

The number is "1.5432" and i need it 1.5432

Works fine for me:

Dim dbl As Double = Double.Parse("1.5432")
MessageBox.Show(dbl.ToString)

 

[kulrom]

The number is "1.5432" and i need it 1.5432

http://www.vbdotnetforums.com/vb-ne...633-how-convert-string-double.html#post124561

 

[raysefo]

Parsed value is: 15432