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I want to be able to put all the info and to connect and retrieve data into an app. In VB.net I used to make a seperate vb module that I would access from the main form like this
From a button click
getData()
and in the module the function is called getData()
this all worked great in VB and it kept my main form and all the "data modules" seperate. They were easy to maintain and troublshoot.
How would I do this with c#.dot? I have tried making a seperate class file but I cant figure out how to call it. The above procedure does not work the same as it did in VB
tia
Rafone
Statistics are like bikini's...
What they reveal is astonishing ...
But what they hide is vital ...
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Could you post the code you're trying to use?
Intelligence is almost useless for those who have nothing else!
Phone: +55 51 81252.425
Email: caiokf@gmail.com
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sure. This works fine from my form
private void connectToolStripMenuItem_Click(object sender, EventArgs e)
{
// connect to the database
// define connection string
strConn = "Data Source=localhost;IntegratedSSPI;
"+ "Initial Catalog=myDB";
strSQL = "SELECT * FROM myTable";
SqlDataAdapter da = new SqlDataAdapter();
cn = new SqlConnection(strConn); // connect to SQL
//-------- Define a new Dataset ----------
DataSet ds = new DataSet();
//-------- Define a new DataAdapter ----------
da = new SqlDataAdapter(strSQL, cn);// connect the data adapter
//-------- fill the DataAdapter ----------
da.Fill(ds, "dsPoints");
//-------- Assign the DataSet to the DataGrid ----------
dgv1.DataSource = ds;
dgv1.DataMember = "dsPoints";
}
I would like to have the button click on the form just call this code as a module say like this
private void connectToolStripMenuItem_Click(object sender, EventArgs e)
{
getData()
}
The coding of C# I'm catching on to but the mechanics of how the pieces connect together (outside of the form)are what has me hosed up.
I would like to be modulerized...can't really find good reference on concepts plenty of content though.
any help or suggestions are greatly appreciated.
TIA
Rafone
Statistics are like bikini's...
What they reveal is astonishing ...
But what they hide is vital ...
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Hi,
To do that: your other class will need to have a "static" method (do not need a instance - google it if needed), and problably you would have to pass the grid to the function.
Anyway, I was think that's is not the best solution, I would like to give some tips:
- Do not use hard-coded connection string. Put the connection string in app.config and reference from there.
- Do not modularize so much as to make your module dependable of your form.
- Maybe try something like that, just a quick implementation, and easy to use:
public class DatabaseAccess
{
public static DataTable OpenQuery(string query)
{
OleDbCommand cmd;
OleDbConnection cnn;
OleDbDataAdapter da;
DataSet ds;
DataTable table;
try
{
cnn = new OleDbConnection(YOUR_CONNECTION_STRING);
cmd = new OleDbCommand(query, cnn);
cmd.CommandType = CommandType.Text;
cnn.Open();
da = new OleDbDataAdapter(cmd);
ds = new DataSet();
da.Fill(ds);
table = ds.Tables[0];
cnn.Close();
cnn.Dispose();
}
catch (Exception e)
{
throw new Exception(e.Message);
}
return table;
}
}
And use it like:
grid1.DataSource = DatabaseAccess.OpenQuery("SELECT ... FROM...");
Regards
Intelligence is almost useless for those who have nothing else!
Email: caiokf@gmail.com
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Sir;
Thank you very much. I can see from this example exactly how to acomplish what I wanted. Thanks also for the tips...and for reminding me that I need to clean up after myself i.e.
cnn.Dispose();
You have been most helpful!!
rafone
Statistics are like bikini's...
What they reveal is astonishing ...
But what they hide is vital ...
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Glad to help
Regards
Intelligence is almost useless for those who have nothing else!
Email: caiokf@gmail.com
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Rafone wrote: Statistics are like bikini's...
What they reveal is astonishing ...
But what they hide is vital ...
I like that 
Harvey Saayman - South Africa
Junior Developer
.Net, C#, SQL
you.suck = (you.Passion != Programming & you.Occupation == jobTitles.Programmer)
1000100 1101111 1100101 1110011 100000 1110100 1101000 1101001 1110011 100000 1101101 1100101 1100001 1101110 100000 1101001 1101101 100000 1100001 100000 1100111 1100101 1100101 1101011 111111
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I have created a custom datagridviewcell that is to take a double value
from the database and parse it into a string that displays a date in a
certain format. I have the conversion process working.
The trouble that I am having is getting and pushing the double value
to/from the database. Of course the FormattedValue that is generally
pushed to the database is the string but I want the double that generated
the string.
Any ideas on how I can change the property that is bound to the database
instead of FormattedValue?
Brian
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I figured it out.
What I did was override the cell's Paint method and paint the string I
wanted displayed in the cell leaving the double value as the cells
formattedValue. I then overrode the cell's ParseFormattedValue method
to take the string that the user input, convert it to the appropriate
double representation and make it the formattedValue of the cell. This
displayed the correct value to the user while maintaining the correct
double value as the cells value for pushing back to the database.
I also had to create a new DataGrodViewEditControl to display the
correct string to the user when editing.
If anyone has a similar problem and wants a look at the code, email
me at liedtke@frii.com.
Brian
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I'm trying to make a username grabber from a game's highscores page.
http://hiscore.runescape.com/hiscores.ws[^]
The name I want to grab will be in the center where it says "KingDuffy 1"
How would I go about doing this?
Thanks,
Buckley.
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This is how you extract the source:
http://www.experts-exchange.com/Programming/Languages/C_Sharp/Q_20739698.html
i don't know the best way to grab the usernames, but i would probably put the whole source into a string, substring it by figuring out where the highscorelist starts and ends, and then maybe split the tablerows apart. But that's alot of code, and i think you should look into regular expressions, which might solve your problem in a better way.
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Ok thanks, Im going to try that btw that link is to a site where they will help you if you pay and I don't like that. Does anyone have anymore insight on this?
Thanks,
Buckley.
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scroll to the bottom of the page that i linked to 
EDIT: weird, if you come from google you can see the answer.. paste the link onto google.com and visit it from there. then scroll to the bottom.
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Ok I looked at I already know how to get the html source, but I need to retrieve only the username. This is the html source.
http://paste-it.net/public/dfe778b/[^]
On line 339 contains on of the usernames "Kingduffy 1" but it's not always on line 339 so thats why i need to know how to strip it and retrieve all the usernames on that page.
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What I've done in the past to grab information from a web page is to take
the web page returned as a string from the StreamReader.ReadToEnd()
method of the StreamReader used to get the web page and break it into an
array of HTML tokens. It is pretty starightforward to scan the array
to find the data you want.
The tokenizer I created to do this is as follows:
/// <summary>
/// Tokenize the passed string which contains an HTML page into HTML elements
/// </summary>
/// <param name="InStr">The HTML page to parse.</param>
/// <returns>An array of strings that contains the seperate elements of the passed HTML page.</returns>
private string[] Tokenize(string InStr)
{
ArrayList buf = new ArrayList();
int begin = 0, end = 0;
bool in_tag = false;
while (end != -1) // IndexOf returns -1 when end of string encountered
{
if (!in_tag)
{
end = InStr.IndexOf("<", begin); // find index of start of next HTML tag
if (begin < end) // if there is length to the token.
buf.Add(HttpUtility.HtmlDecode(InStr.Substring(begin, end - begin))); // Add token to list
begin = end;
in_tag = true;
}
else
{
end = InStr.IndexOf(">", begin); // find index of end of HTML tag
buf.Add(InStr.Substring(begin, end - begin + 1)); // Add HTML tag to list.
begin = end + 1;
in_tag = false;
}
}
return ((string[])buf.ToArray(typeof(string)));
}
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Whoops. The posting converted the '<' and '>' characters
to the HTML equivalent '>' and '<' repectively making
this hard to read.
Instead of cluttering this up with posting a new snippet
email me at liedtke@frii.com if you want the code.
Brian
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Joshua,
Your email address is bouncing. It is the gmail.com account.
Re-email me with a valid address.
Brian
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Hi
I have an item in my Solution folder (see here[^])
How can I access it ?
By the way I set Build Action of it to Resource .
Thanks in advance.
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You could use like
Stream stream = YOUR_ASSEMBLY.GetManifestResourceStream("Smile.icons.majid.gif");
Or you could try to access it like visual studio in the form designers?
Add to the project resources and use it like:
public Image SomeImage
{
get { return global::Smiles.Properties.Resources.000; }
}
Intelligence is almost useless for those who have nothing else!
Phone: +55 51 81252.425
Email: caiokf@gmail.com
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Thank you Caio Kinzel Filho.
Caio Kinzel Filho wrote: Stream stream = YOUR_ASSEMBLY.GetManifestResourceStream("Smile.icons.majid.gif");
How can I find MY_ASSEMBLY name ? 
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Often you will be looking in tha same assembly of your executing code, so:
Assembly.GetExecutingAssembly()
If not, look for methods in the Assembly class and I'm sure you will get it!
PS.: Don't forget to use the System.Reflection namespace
Intelligence is almost useless for those who have nothing else!
Email: caiokf@gmail.com
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how can i send messages to gtalk or yahoo messenger and receive from it.
“You will never be a leader unless you first learn to follow and be led.”
–Tiorio
"Coming together is a beginning, staying together is progress, and working together is success." Henry Ford
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Do not attempt to bump your post to the top of the forums. That's bad form - very bad form.
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I second that. It's bad enough some clown on the town/community forum for my area loves to do this to keep old, dead threads, alive. I think the chap is still trying to figure out what FFS means 
"The clue train passed his station without stopping." - John Simmons / outlaw programmer
"Real programmers just throw a bunch of 1s and 0s at the computer to see what sticks" - Pete O'Hanlon
"Not only do you continue to babble nonsense, you can't even correctly remember the nonsense you babbled just minutes ago." - Rob Graham
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I need to get sql command text where parameters are replaced by values.
I tried code below but displayed sql statement contains parameter names,
not actual values.
How to obtain command where parameters are replaced by their values ?
Andrus.
static IDataReader ExecuteReader(string command
, out IDbConnection connection
, CommandBehavior behavior
, params IDbDataParameter[] dataParams)
{
connection = ...
connection.Open();
IDbCommand cmd = new SqlCommand(command, connection as
SqlConnection);
foreach (IDbDataParameter p in dataParams)
cmd.Parameters.Add(p);
MessageBox.Show(cmd.CommandText);
return cmd.ExecuteReader(behavior |
CommandBehavior.CloseConnection);
}
Andrus
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