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there's no data in the listbox that it supposed to show.
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In that case, since it appears to be in your form constructor:
public frmMainForm()
{
...
} I assume that
if (prog == "CS") is failing - presumably because "prog" is not "CS" yet.
Where are you assigning that?
Have you put a breakpoint at the if statement, and looked as what "prog" is?
All those who believe in psycho kinesis, raise my hand.
My 's gonna unleash hell on your ass. tastic!
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I declared the variable prog as global and used it to assign the value "CS" when the user has clicked the radio button. it is goes like this:
private void rdioProgCS_CheckedChanged(object sender, EventArgs e)
{
prog = "CS";
rdioProgCS.Enabled = false;
rdioProgIT.Enabled = false;
}
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So since your code that tests it is in your constructor it will not be equal to "CS" until after the form is displayed...
By that time, it is too late, the constructor is only run once per instance.
All those who believe in psycho kinesis, raise my hand.
My 's gonna unleash hell on your ass. tastic!
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ok. i understand now. i'll just transfer the code to a method (which didn't occured to me a while ago). what i first thought is if i put the code inside the method of the listbox the database will be opened once i clicked the listbox and since i need the data to be in the listbox before i click the listbox it will be too late so i put it in the constructor which i think is the best place because once the method of the form has ran the database will be open until i close the form.
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i dont know but if you put break point and detecting the code.
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Hi all,
txt_name.Text = (string)Session["Product_Name"];
if is a integer. . . .
How do i type it?
txt_number.Text =
Thank You
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it is in string form you can do anything with it
{maybe Session["Product_Name"]=null}
modified on Saturday, January 30, 2010 4:51 AM
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You can type it like that:
txt_number.Text = Session["Product_Number"].ToString();
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it state:
Object reference not set to an instance of an object.
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YiXiang_89 wrote: it state:
Object reference not set to an instance of an object.
For my first answer i asumed that you have already added a Session variable of type int with name Product_Number . The point is that you can use ToString() method to get a string representation of your variable which is a numeric type.
Here is a full example:
Session["Product_Number"] = 555;
string s = Session["Product_Number"].ToString();
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Now you have it
Forgive my sarcasm but put the question too.
Don't make us search for it. You posted it in the QuickAnswers/Questions.
Post it here too.
Also what exactly do you want?
Your question is really vague.
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Does anybody know of a good free Administrator tool for Firebird? i.e. where you can look at tables, execute queries etc.
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These are two free tools
FlameRobin
IBAccess
If you can think then I Can.
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Write your own?
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Is Global Assembly Cache similar to COM?
It seems you register objects which can be used by other applications. Other applications can then create objects by referencing the GAC?
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COM is a technology. GAC is a location. COM registration is a lot more involved, with entries in the registry, etc. GAC is a common location to place assemblies, there is no registration or entries in the registry.
I know the language. I've read a book. - _Madmatt
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ok so does it make sense to use COM in C# applications?
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Well that depends.
Do you need to expose you assemblies to/as COM?
In other words is there a "legacy" COM based component(s) that needs to use your C#/.Net
data/object model?
If yes => then YES it makes sence to expose your "whatever" as COMVisible.
Else => NO it does NOT make sence.
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ok so if I had developed in .NET a bunch of data access helper classes for a particular type of database and wanted it used by other .NET applications, each application would need the DLL right?
If I had an application in C++ MFC that could use that code, it may make sense to make it COMVisible and then the C++ application could get at the methods?
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Ryan Minor wrote: each application would need the DLL right?
Each application would need to reference the assembly, whether it is in the GAC, in the local folder, or elsewhere.
How the Runtime Locates Assemblies[^]
I know the language. I've read a book. - _Madmatt
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Mark Nischalke wrote: GAC is a location
It's also the reaction I have when I see some of these questions...
.45 ACP - because shooting twice is just silly ----- "Why don't you tie a kerosene-soaked rag around your ankles so the ants won't climb up and eat your candy ass..." - Dale Earnhardt, 1997 ----- "The staggering layers of obscenity in your statement make it a work of art on so many levels." - J. Jystad, 2001
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and what is that supposed to mean, twit?
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Ryan Minor wrote: and what is that supposed to mean, twit?
Whatever you want it to mean, Sparky...
.45 ACP - because shooting twice is just silly ----- "Why don't you tie a kerosene-soaked rag around your ankles so the ants won't climb up and eat your candy ass..." - Dale Earnhardt, 1997 ----- "The staggering layers of obscenity in your statement make it a work of art on so many levels." - J. Jystad, 2001
modified on Saturday, January 30, 2010 3:12 PM
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