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yeah i know but i need to to prematurely quit... say on error... and im 4 functions down... and it cant just send me to an error dialog... has to print to a screen ... wait for any keypress and then terminate like a good dos program does...
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I dont' know if this will work for you (I don't get into console apps very much), but you could try Application.Exit().
RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome
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No it doesnt... if this were C# Forms or VB forms that might work, however... a console app is a module, it hasnt got a class name or functions behind it beside what it builds... id need to say get a handle of the running thread, and tell that thread to terminate...
im just not sure as to how i should do that.
Ive wrapped a few of the console APIs... FreeConsole onle destroys the window handle to the console itself... it doesnt terminate the process behind it...
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Oh well, it was just a quick thought...
In that case, I'd implement a scheme as Colin suggests. Be sure it is a custom defined Exception and throw that when you need to. Make sure that the only Exception Handler that can handle that exception is the one in Main. All other exception handlers must not handle this exception if they do, must catch, then re-throw the exception to send it up the call chain back to Main.
RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome
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Then throw an exception.
Create an exception class that is used for nothing else than premature exit. When you need to exit early throw the exception. Wrap everything in your main in a try/catch block and catch this specific exception. The catch handler can then process the exit in a considerate manner.
Do you want to know more?
Not getting the response you want from a question asked in an online forum: How to Ask Questions the Smart Way!
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Is this what you are looking for?
System.Environment.Exit(0)
Jason
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Yes... Thank you... sometimes i wonder if they hide things on purpose...
But thank you so much 
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How can you search through a data set for a specific value?
search dataset in column 1 for value1
search dataset in column 2 for value2
search dataset in column 1 and 2 for value1 and value2
I'm sure this is possible but not sure where to start?
Thanks,
Beginner in ASP.Net and VB.Net
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normally id just create a loop and go through all of data row by row... You could function that as well, to allow you to use the same code for different sets of columns and values...
If anyone else knows something easier id like to know as well...
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Your suggestion would work. Could you supply some code for me to work off of?
Thanks,
Beginner in ASP.Net and VB.Net
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'Make a fake DS and Table
Dim DS As New DataSet
With DS.Tables.Add("Account Numbers")
.Columns.Add("FName")
.Columns.Add("LName")
.Columns.Add("ACCTNO")
End With
'FName |LName |ACCTNO |
'------------------------
' | | |
' | | |
For Each r As DataRow In DS.Tables("Account Numbers").Rows()
If r.Item("FName") = "John" And r.Item("LName") = "Doe" Then
'DO SOMETHING
End If
'Modify a specific value
Select Case r.Item("FName")
Case "John"
r.Item("ACCTNO") = "J" & CType(r.Item("ACCTNO"), String)
Case "Dan"
r.Item("ACCTNO") = "D" & CType(r.Item("ACCTNO"), String)
End Select
Next
'to return a row number
Dim cnt As Int32 = 0
Dim rownum As Int32
While DS.Tables("Account Numbers").Rows.Count() > cnt
With DS.Tables("Account Numbers")
If CType(.Rows(cnt).Item("FName"), String) = "Joe" Then
'if in a function return cnt
'otherwise change a var out of scope
rownum = cnt
End If
End With
cnt += 1
End While
you can function these out... i hope it helps... also you can return full rows instead of just the offset number if youd like...
if you cant read the code, cutting and pasting it in to vb will reset it to something you actually can follow.
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Thanks for the help.;)
Beginner in ASP.Net and VB.Net
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I created a dataset through access database. I just need the search, or find engine to locate the files faster, if the files are too long. I would do the same thing as you suggested. Mine is an address book, and I also have a password dialog. How would I also can make the password dialog, if i want to change my password code?
My addressbook consist of First Name, Last Name, Address, City, State, Zip Code, Email. I would like to have a search button with code. Then I use a select statement for every field, then when the dataset populates, I can use the search and input box to enter the name of the person I am looking for?
Or do I have to enter in a case select every persons name within a dataset?
bravo659
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Hi Brit,
search through your dataset/datatable using the datatables "Select" method. It takes a string parameter in the form of a T-Sql like select statement. ex:
'create your dataset and datatable etc...
Dim ds as New Dataset("myDataset")
Dim dt as New DataTable("myDataTable")
dt.Columns.Add(New Datacolumn("columnOne", sqldbtype.varchar)
dt.Columns.Add(New DataColumn("columnTwo", sqldbtype.varchar)
'some code to populate the table here...
'search column one for 'Foo'...
dim drResultsColOne() as Datarow = ds.Tables("myDataTable").Select("columnOne = 'Foo'")
'search column two for 'Foo'...
dim drResultsColTwo() as Datarow = ds.Tables("myDataTable").Select("columnTwo = 'Foo'")
'or search both columns for 'Foo'...
dim drResultsBoth() as Datarow = ds.Tables("myDataTable").Select("columnTwo = 'Foo' OR columnTwo='Foo'")
the result is a datarow array that contains the datarows that match your search criteria.
forgive any spelling errors, this was typed off the top of my head.
-jim
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If you search for 'Foo', will it find Food? If so, how to I get the information from the array?
Thanks,
Beginner in ASP.Net and VB.Net
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no, if you were to search for 'Foo' it would not include any rows with 'Food' in column1 or column2, as Foo and Food are not equal.
However the select statement does support the use of wildcards, so a search for 'Foo%' would include any rows with 'Food', 'Foos' or 'Fool' as well as, but not include rows with 'Ofoo' or 'Afoo' in columns 1 or 2. You can also use '%Foo%' to search for 'Afool', but note that if your datasource is large enough, you could see a performance hit when using wildcards on both sides of your search value.
as for getting the data from the array, you would work with the datarwow array as you would with any other array. from my previous example:
drResultsBoth(0) would give you the datarow at position 0 in the drResultsBoth array.
typically you would enumerate over the array to perform some sort of change on a field in the datarow. ex:
if (drResultsBoth.Length > 0) Then
For Each currentRow as Datarow in drResults
if (cstr(currentRow("ColumnOne")).trim = "Foo" Then
currentRow("ColumnTwo") = "Bar"
End If
Next
Else
messagebox.show("No results were found for your search criteria!")
End IF
hope this helps
-jim
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Is it possible to search through the dataset using a select statement? If so how? That is really what I need. So if the user does search for 'foo' then I want to capture the first match. If there is a value of food and foot in the database, then which ever one is first in the database I will display. I really dont need an array. I just want to search for the value they enter and find the first closest match and display it.
The only thing with using a select statement. I don't think I will be able to find out which row it found the closest match on. Will it?
Thanks,
Beginner in ASP.Net and VB.Net
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>Is it possible to search through the dataset using a select statement?
well, yeah. just keep in mind that the data is stored in the tables within your dataset. so if you want to search accross different tables you would have to run the select statement on each individual table separately. but it seems to me that if your database/dataset design is done correctly you should only have to worry about searching a single table; ideally, only a single field.
in regards to displaying the first match... i would still recommend using the select method. i haven't seen any of your code or db design, so i'm not sure exactly what that looks like, but providing you have a primary key defined and you are carrying that over to your dataset when you load the data, (this should happen automatically if you are using ms sql) the select method of the datatable should use the primary key when searching your datatable and place the items into the array based on the primary key values.
so when you do your select, even though you get back an array you can just take the first item iun the array, index 0, and display the value from the appropriate field.
usually when implementing a search, you want to display more than just a single field value, for instance in the case of a product search, you could take all attributes of the row at array index 0 and place them into textboxes for display/manipulation or insert them into html for display on a webpage.
-jim
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Thanks for the help.;)
Beginner in ASP.Net and VB.Net
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Does anyone out there know of any good articles dealing with remoting? I'm looking to create a client-server application (first one) and would like to implement the use of remoting to transfer business objects back and forth from the server to the client.
Thanks!
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 Hi Chris,
You can find enough resources at:
ThinkTecture
I Hope this helps.
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how do i flush sound buffer . i need it because while playing in between if press stop button , it is retaining contents in buffer and again if i press play button it is getting overlapped with previous content of the buffer and there is glitch (problem)while playing at the beginning. i am using "waveoutopen" function
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The problem is you apparently are not stopping the waveOut and Closing the device before you start playing another soung, you're actually appending the new song data to the one still playing.
To flush the buffer, use waveOutReset() and supply it the handle you got back in the first parameter passed to waveOutOpen, then use that same handle with waveOutClose to close and release the device.
RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome
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This is probably really simple.
Say I've got a window frmMain. How do I get a handle for that window??
Cheers
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