I am trying to use windows form application picturebox method Load. My code to do so is the following:
string image = "image.jpg";
pictureBox2->Size = System::Drawing::Size(36, 40);
pictureBox2->Load(image);
Controls->Add( pictureBox2);
However, I am getting the following errors:
'void System::Windows::Forms::PictureBox::Load(System::String ^)' : cannot convert parameter 1 from 'std::basic_string<_Elem,_Traits,_Ax>' to 'System::String ^'
Any idea how can I convert string to String ^?
use simply :
String ^image = "image.png";
Load wait a managed string.
This should do it:
std::string image("image.png");
String^ MyString = gcnew String(image.c_str());
Related
I'm new in Dart.
In the code bellow exception ccures :
void main(){
dynamic alpha = "String";
dynamic beta = 12;
print("Your code is so "+beta+" "+alpha);
}
Error :
type 'int' is not a subtype of type 'String'
Why when we use dynamic keyword to insist on telling the compiler for doing this job it's still got error? "combining string and other types"
When you declare your variable dynamic it does not mean the variable won't have a runtime type. It means the type can change:
dynamic alpha = 'String';
print(alpha.runtimeType); // prints String
alpha = 1;
print(alpha.runtimeType); // prints int
You can't do that with var. With var the compiler will infer the type, and it's fixed after that:
var beta = 'String';
print(beta.runtimeType);
beta = 1; // error: A value of type 'int' can't be assigned to a variable of type 'String'.
print(beta.runtimeType);
When you try to do "Your code is so " + beta you use the + operator of your String with an int paramter: beta.
You can see in the documentation that the + operator of String only accepts a String:
String operator +(String other);
If you wanted to use that operator you would have to convert the int variable to String:
print('Your code is so ' + beta.toString() + ' ' + alpha);
That's not remarkably beautiful. Instead of concatenation try string interpolation:
print('Your code is so $beta $alpha');
In Jmeter assertion main trying to compare values of 2 variables with double data type. following script I'm using to cast a value in double
double actual = vars.getObject("Merticvalue");
log.info ("Actual MetricValue is found to be " + actual);
double expected=153.60
vars.putObject("expected",expected);
if (vars.getObject("expected") != vars.getObject("actual")) {
props.put("testcaseExecutionStatus",5);
String Status = props.get("testcaseExecutionStatus").toString();
log.info("Status:"+ Status)
return;
}
props.put("testcaseExecutionStatus",1);
String Status = props.get("testcaseExecutionStatus").toString();
log.info("Status:"+ Status)
I'm getting this error:
GroovyCastException: Cannot cast object '153.60'
with class 'java.lang.String' to class 'double'
The issue is getting Merticvalue value with is saved as String, you can cast it:
double actual = Double.valueOf(vars.getObject("Merticvalue"));
So if I have a String
char string[4];
string = "A10";
How Can I get 10 as an Integer.
I tried getting 10 by itself using this but it didn't work.
char string[4];
char string2[2];
string = "A10";
string2[0] = string[1];
string2[1] = string[2];
I don't need to worry about the A, I know how to get that, I need to be able to get the 10 as an integer.
In java you can use the following code to convert string to integer,
int i=Integer.parseInt(s2);
for more information view this website,
https://www.javatpoint.com/java-string-to-int
I´m trying to set a random number in a string, but idk how i can let the program know that i want the random number and not the letter n.
Im using visual studio 2008 , Windows Forms C++
System::Drawing::Font ^Fuente = gcnew System::Drawing::Font("Arial Black",50);
System::Random ^r = gcnew System::Random(System::DateTime::Now.Ticks);
char n=r->Next(1,100);
buffer->Graphics->DrawString("n",Fuente,System::Drawing::Brushes::WhiteSmoke,50,50);,50);
System::Drawing::Font ^Fuente = gcnew System::Drawing::Font("Arial Black",50);
System::Random ^r = gcnew System::Random(System::DateTime::Now.Ticks);
int n=r->Next(1,100);
buffer->Graphics->DrawString(n.ToString(), Fuente, System::Drawing::Brushes::WhiteSmoke,50,50);,50);
Might be what you are after
You're using quotes when drawing string - that's a string literal.
You should convert your number to a string using stdlib.h itoa function.
char number[3];
int n = r->Next(1,100);
itoa(n, number, 10); //number to convert, string to save value in, base
buffer->Graphics->DrawString(number,Fuente,System::Drawing::Brushes::WhiteSmoke,50,50);,50);
How do you convert an unsigned long to a String ^?
I've tried
String ^ mystring = marshal_as<String ^>(myunsignedlong)
but it doesnt work!
"unsigned long" is an alias for System::UInt32 in a C++/CLI program. Use its ToString() method:
unsigned long value = 42;
String^ txt = value.ToString();
or use its overloads to use a non-default format or culture. Or use String::Format() for many more composite formatting options:
String^ txt = String::Format("The value is {0}", value);