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C# doesn't allow global variables. Every field is contained in a class. If you need global-like access, you can stick a static field in a static class:
public static class MyStuff
{
public static int MyVar = 15;
}
int val = MyStuff.MyVar;
To be honest though, if you're needing lots of globals, you probably have flawed design. I find static classes to be a rare need; you only truely need them for functions that have zero reliance on other classes, zero dependencies, and each function is completely self-contained with no side effects.
Tech, life, family, faith: Give me a visit.
I'm currently blogging about: And in this corner, the Party of Allah
The apostle Paul, modernly speaking: Epistles of Paul
Judah Himango
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I want to use it(this variable )in report Formula , is it possible ?
regards ,
s_mostafa_h
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mostafa_h wrote: I want to use it(this variable )in report Formula , is it possible ?
A variable in a report's formula? Sure, so long as you can put the values into the formula from code, there's nothing stopping you from using a variable as input.
But I don't see how this relates to global variables.
Tech, life, family, faith: Give me a visit.
I'm currently blogging about: And in this corner, the Party of Allah
The apostle Paul, modernly speaking: Epistles of Paul
Judah Himango
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You can use it anywhere you like.
modified 12-Sep-18 21:01pm.
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Using a global variable is not a good idea.
I think that it's better to use parameter objects rather than global variables.
For example if you have to pass x,y and z to a formula calculator you can have a object that gets x,y and z as parameters and then you can pass this object to a suitable metohd of your calculator.
In form1
<br />
public FormulaParams GetFormulaParameters()<br />
{<br />
FormulaParams params=new FormulaParams();<br />
params.x=int.Parse(this.txtX.Text);<br />
params.y=int.Parse(this.txtY.Text);<br />
params.z=int.Parse(this.txtZ.Text);<br />
return params;<br />
}<br />
In form2
<br />
public void Calculate()<br />
{<br />
Form1 form1=new Form1();<br />
form1.ShowDialog();<br />
int result=new Formula().Calculate(form1.GetFormulaParameters());<br />
}<br />
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Hi
plz , read this :
public bool Chk1;
...
private void btnShowName_Click(object sender, EventArgs e)
{
if(CheckBox1.Checked)
Chk1=true;
sqlconn.Open();
da = new SqlDataAdapter(strQuery, sqlconn);
SqlCommandBuilder scb = new SqlCommandBuilder(da);
da.Fill(DS.MyTable);
crystalReport11.SetDataSource(DS);
ParameterField paramfield = new ParameterField();
ParameterFields paramfields = new ParameterFields();
ParameterDiscreteValue discreteval = new ParameterDiscreteValue();
paramfield.Name = "fieldName";
<big>discreteval.Value = Chk1 </big>;
paramfield.CurrentValues.Add(discreteval);
paramfields.Add(paramfield);
crystalReportViewer1.ParameterFieldInfo = paramfields;
crystalReportViewer1.ReportSource = crystalReport11;
sqlconn.Close();}
and Crystal Report , I create a parameter named :"fieldName" , and in Formula Editor , I wrote this :
Global booleanVar Chk1;<br />
if Chk1=true then {MyTable.FirstName}={?fieldName}
finally When I run the App. ,and I checked the CheckBox1, I have no report .
(I want if I checked the CheckBox1 , all record of FirstName field is Shown)
Where is My Wrong ???????
thanx a lot ,
Regards
-- modified at 3:41 Wednesday 16th August, 2006
s_mostafa_h
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Well I'm not working with CR anymore
Global booleanVar Chk1;
I can't see where your Chk1 value(the one in formula editor) is assigned.
You create a ParameterDiscreteValue
ParameterDiscreteValue discreteval = new ParameterDiscreteValue();
and pass Chk1 value to it
discreteval.Value = Chk1 ;
but how can you tell the CR that this value should be assigned to your global variable?
It seems that something is missing.
I think that may be you should define a paramter named Chk1 and set its value.
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surely , discreteval.Value = Chk1 is a value from Form1.cs .
if not , it doesn't work.
s_mostafa_h
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is there any help ?.....
s_mostafa_h
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I have a TabControl that is reordering the tabPages when I run the application. There are 10 tabs right now. In the designer, they are in the order I wish them to be. But, when I run the application, they change around a bit. I have tried adding a new tab, then remove it. Still broken. Weird.
Any ideas?
Kenny O'Dell
Prinicpal R&D Software Eng
Mettler-Toledo Inc.
Worthington, OH
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Hello
Kenny O`Dell wrote: I have a TabControl that is reordering the tabPages when I run the application
By itself?!!
Kenny O`Dell wrote: when I run the application, they change around a bit
How?
Kenny O`Dell wrote: Still broken
Define "Broken"!!
Kenny O`Dell wrote: Any ideas?
Some code would be very helpful
Regards![Rose | [Rose]](https://codeproject.global.ssl.fastly.net/script/Forums/Images/rose.gif)
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Hi All.
I want do make a vstd2005 setup (windows application) that will contain in itself (embedded) all pre requisites.
What option I need to choose in the prerequisites window of the setup project?
Is the "Download prerequisites from the same location as my application"?
Thx in advance.
Best regards,
Marco Alves.
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YOu'll need whatever your app requires. If it's a C# app, you'll need the .NET framework at least, so you'll check that as a prereq (done automatically, IIRC). If your app uses any 3rd party ActiveX controls, you'll need to distribute that. If your app requires any dlls to be installed into the GAC, you'll need to do that as well as part of the install. And so on.
Marco2250 wrote:
Is the "Download prerequisites from the same location as my application"?
That means you're putting all the prereqs (i.e. .NET framework, etc.) on your website, instead of the vendor's website (i.e. Microsoft, etc.).
Tech, life, family, faith: Give me a visit.
I'm currently blogging about: And in this corner, the Party of Allah
The apostle Paul, modernly speaking: Epistles of Paul
Judah Himango
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Hi Judah, thx a lot.
But, if I choose this option the pre requisites will be placed into my setup "cab" file?
thx a lot.
-- modified at 15:58 Tuesday 15th August, 2006
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Marco2250 wrote: but, if I choose this option the pre requisites will be placed into my setup "cab" file?
Ehhh I don't think so. I don't recall very well though, you'd have to try it out.
Tech, life, family, faith: Give me a visit.
I'm currently blogging about: And in this corner, the Party of Allah
The apostle Paul, modernly speaking: Epistles of Paul
Judah Himango
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Hello
Judah Himango wrote: If your app uses any 3rd party ActiveX controls, you'll need to distribute that. If your app requires any dlls to be installed into the GAC, you'll need to do that as well as part of the install
I thought the deployment project does that for you by checking the dependencies, doesn't it?
Judah Himango wrote: That means you're putting all the prereqs (i.e. .NET framework, etc.) on your website
I also thought that "Same location as my application" means the same folder. What website you mean?
Regards
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Nader Elshehabi wrote: I thought the deployment project does that for you by checking the dependencies, doesn't it?
Eh, sometimes. It can find ActiveX control dependencies, but it can't always do a proper install. Often times you'll need your installer to have the ActiveX control installer run as part of it.
Nader Elshehabi wrote: I also thought that "Same location as my application" means the same folder. What website you mean?
Yeah, that's what I meant: either the vendor's website, or your deploy location.
Tech, life, family, faith: Give me a visit.
I'm currently blogging about: And in this corner, the Party of Allah
The apostle Paul, modernly speaking: Epistles of Paul
Judah Himango
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Hi guys,
How do I change a double value from negative to positive. i.e. -3.14 to 3.14
Please help
sasa
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double negativeDouble = 0 - positiveDouble;
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Just for the sake of completeness...
double positiveValue = (double)Math.Abs( negativeValue );
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Use the negation operator (-):
double x = -3.14;<br />
x = -x;
---
b { font-weight: normal; }
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Thank you guys, I went ahead using ftemp=0-ftemp;
Appreciate the response
sasa
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Actually, that should be:
ftemp = 0.0 - ftemp;
The value 0 is an integer value. You should use a double value to make sure that your value doesn't get converted to an integer before the calculation.
The zero value is superflous, though:
ftemp = -ftemp;
---
b { font-weight: normal; }
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