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want to add new values to datatable rows on each button_click event..i want it in such a way that the new data gets added to the next row,instead of overwriting the first...Below is the code which i wrote
Button_Click event()
{OleDbDataAdapter da_pay = new OleDbDataAdapter();
DataSet ds_pay = new DataSet();
con2.Open();
da_pay.SelectCommand = pay_cmd2;
da_pay.Fill(ds_pay ,"details");
pay_dt=ds_pay .Tables ["details"];
pay_dt.Rows.Add();
con2.Close();}
But for every button click event the first row hets overwritten
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could you explain more what is happening there??? where is the new data comming from is it a new row from the data base that the old table had gotten its values???what do you expect from pay_dt.Rows.Add(); to do??
try to create data columns same fields as the datatable then a datarow assign the values of the new row you want to add to the created datarow , then add the new datarow to the old dataTable or try the function DataTable.Merger(x) where it merges two dataTables.
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I think i am missing out the basic concepts of data table..I selected values from the data source and stored it in a data set in the table details..A datatable was created in the same dataset and when it was connected to the gridview the values where displaying(eventhough i dint specified the column).I thought then if i give pay_dt(which is my data table).rows.add() then new rows eill get added to the datatable and values will also gets added.values are getting added..But it is overwriting the first
modified on Thursday, August 27, 2009 6:16 AM
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Well first the values appeared becuase in the grid there is a prop name autogenerateColumns.
try to fill the new dataTable with the new data and then databind.
Tell me if this worked?? or there is something you need to be explained more
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I have this application that in very brief, shows up an image from time to time...
Now, you know that if you press PrintScreen whilst a video is running, the image derived does not show the screen (if Hardware Acceleration is turned on).
I was wondering if I could achieve this in C# (without going into great lengths) - to make the image non-apparent on PrintScreen...
Or if I should use a completely different method? I had in mind of tracking the Clipboard but that would take me to great lengths and can be easily circumvented.
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what do you want to capture ?
I just tried Google Earth with DirectX9 Mode, and using PrintScreen..-> it's working, no problem.
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What I want is NOT to capture.. I want to make the system so that the image will not be captured when a screenshot is taken... However implementing a lock upon the PrintScreen key is not the ideal way... What I had in mind, is implementing it similar to how it works when a video is played on a PC with Hardware Acceleration on - the image is 'translucent' or something, so that it does not show up on the screenshot...
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HI,
I have managed code. I have namespace and set the COMVisibleAttribute to TRUE. But still I am not able to access the namespace of C# projects in a ATL projects. Any suggestion.?
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Hi
This is from Chandrakanth.
Actually myproblem is....
I want to display images in the body of the Email. It is possible ?
if it is possible means please give me some Tips on that.
If any reference....please send me that
Thanks and Regards
Chandrakanth
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See here.
Life is a stage and we are all actors!
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please tell me what is better to learn language .Net or java
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yashwant vaishnav wrote: please tell me what is better to learn language .Net or java
One is not better over the other (although I'd recommend .NET). They exist for different purposes and cater to different consumers. Read up on both, find out what are the differences, similarities, benefits, odds, etc., of each and figure out what would suit you best.
It is a crappy thing, but it's life -^ Carlo Pallini
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Ask the same in the Java forum and you will get a different answer...
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I am in dotnet but i recommend java because it is cheaper then dotnet and it is open source based
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Cheaper? Didn't know that you have to pay for the framework...
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Gaurav Dudeja India wrote: java because it is cheaper then dotnet and it is open source based
Are you joking?
Indeed ,could you prove that?Java is not rich as .NET and very sluggish and unstable for some OS.For example MathWorks team warns their customers with something like that "because of the problems with JVM,some functions might not work correctly on some OS".If the development framework is not stable enough,then the product will be full of bugs too.
If it's not rich ,to much custom code is required ,which means much more expensive product.
Life is a stage and we are all actors!
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Java is not cheaper than .net.
Both frameworks are free. You can pay different amounts for the IDE you use, for example SharpDevelop is free and has many good features. There are free (and restricted) versions of Visual Studio as well the versions of visual studio you pay for (it is these that can be expensive). I *think* the free eclipse IDE will also allow you to use .net, it definately supports Mono.
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This is difficult to answer. 
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Learn the theory first and reinforce what you learn using a language. C# or java [C++, smalltalk or even Object COBOL] it really should not matter which language you choose, it is tool for implimentation.
If you really want to learn then try both. At work I use C# and at home java. Both have merrits and both have hindrances. C# is probaly easier to get going with but has inconcistencies that hinder learning the thory. Java is consistent and simple, but you need to learn where things are in the libraries.
As a final thought learn the theory of object orientation from the outside in. Start with design and learn UML diagraming and notation. Get it in your head that being language agnostic is the best approach.
Panic, Chaos, Destruction.
My work here is done.
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Define 'better'.
Henry Minute
Do not read medical books! You could die of a misprint. - Mark Twain
Girl: (staring) "Why do you need an icy cucumber?"
“I want to report a fraud. The government is lying to us all.”
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Is .NET a language? How can you compare .NET and Java? It makes sense to compare C# and Java not .NET and Java.
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C# is the better language*, we just need to get a compiler that will compile C# to work with the Java VM. 
But that has nothing to do with which would be better for you to learn.
* Really, it is; in C# we can compare the contents of two strings with the equals (==) operator rather than calling an Equals method  .**
** On the other hand, Java is better because there, methods are virtual by default, whereas in C# they're not .
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