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Hello,
I am looking for how to write a set of data formatted on a text file..Up to now,I have been using c++ and using setprecision(..) and setw(..) commands but I could not find out how to do it in c#.In fact, My output file must be like: three different columns and sets of lines.However, Once I try to write the data on the file, the columns tend to shift to the right..I wanna keep them in order and write them neatly..I hope someone can help me to solve this problem.
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If I am right setw sets the width of a field in c++?
and setprecision set the number of decimal digits?
If so, then you just need string.format or the ToString("formatstring") method of the various data types (int.ToString("..."), double.ToString("..."), etc.)
See Formatting_Strings_in_C_Sharp[^]
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thank you very much..I think that is what I want..again thanks a lot!
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I was accessing a page at work before my vpn fully connected and got a windows login prompt. The login prompt had a list of email addresses, one of them I would not like to have there. Does any one know where this would be stored? I searched the whole registry for that exact address and nothing was found.
I am running windows xp sp3
Thanks
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And this has what to do with C#?
Don't cross post in other forums, especially those that have no bearing on your question..
The reason why you're not getting an answer is because people who read the question don't know where that stuff is stored.
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hi
How Can I export data from DataGridView to Acrobat Reader ? In C#, Please help me the code.
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You need one of the PDF creator libraries. Try a Google search and select the one that suits your purposes.
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This would have a lot to do with C# since someone may have developed a program that accessed such an area..written in C#. I did cross post, I needed an answer and figured if general IT people wouldn't know maybe fellow developers would.
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Sorry I don't understand what you are saying. I gave you the answer, go and take a look, there are a number of C# libraries to do what you want.
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hi friends,
I want to develop 3 tier app but I still confused how to implement it
1. In data access layer, could I return datareader? it's the better approach? some people tell it is not good way, you better used arrayList.
2. I have one method with 3 transaction inside (insert, update, delete)
I make this in business layer, so that the OleDBConnection (open and close), OleDbTransaction placed in business layer and I pass this as parameter to data access layer, is that good way?
3. if anyone have the good tutorial especially in C#, please tell me.
Thanks
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OK, thank you, I check it first
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As far as I know 3-layer architecture is something like this:
Data Access Layer(DAL) <-> Business Layer(BL) <-> User Interface Layer(UI)
Note that tier is diffrent form layer.
DAL is responsible for accessing data from the database (if there is any)
BL is responsible for applying business rules to the data
UI is responsible for displaying the data to the user and providing means for him to change it.
The data travels in special objects called Bussiness Objects.
I strongly recommend that from the DAL to not return data readers, especialy if the DAL component is on a machine and you reader reaches another component on another machine - this thing will not work in a 3-tier architecture.
You could use for the bussiness objects the dataset created by Visual Studio. The newer versions have a functionality which separate the business objects (data tables and data rows) from the table adapters in different namespaces (even different projects I think).
Also I think there isn't a "good tutorial", but different opinions, read a couple of them and then form your own.
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Thanks 4 the answer, could you give me the example?
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As I said, there are lots of examples on the net, just google for them.
I have no smart signature yet...
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I suggest you google for nHibernate or Linq to Entities.
These both map business objects to your relational database(ORM) with varying degrees of success, forming a DAL for you.
I have seen various DALs written with data sets, and would *strongly* advise against it, they work initially for small object sets, but becomes a nightmare as soon as the comlexity increases a little.
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I have heard about nHibernate but it is in java, there is in .net too?
and LINQ to Entities, this new to me, I've learn it but still not familiar with the code.I need more practice, maybe after this project done thanks
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Hybernate is the java version. nhybernate is the .NET implementation.
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hi friends...this is my code
please tell me + -
DAL
public static OleDbDataReader GetAll(OleDbConnection conn, bool status)
{
try
{
string query =
"SELECT [Id], [Name], [CreatedDate], [CreatedBy], " +
" [UpdatedDate], [UpdatedBy] " +
"FROM [Role] " +
"WHERE [Status] = @pStatus " +
"ORDER BY [Name] ASC";
OleDbCommand cmd = new OleDbCommand(query, conn);
OleDbParameter pStatus = cmd.Parameters.Add("@pStatus",
OleDbType.Boolean);
pStatus.Value = status;
OleDbDataReader dr = cmd.ExecuteReader();
return dr;
}
catch (OleDbException ex)
{
throw new Exception("OleDb Error: " + ex.Message);
}
catch (Exception ex)
{
throw ex;
}
}
BLL
public List<Role> GetAll(bool status)
{
List<Role> listRole = new List<Role>();
try
{
if (conn.State != ConnectionState.Open)
{
conn.Open();
}
OleDbDataReader dr = RoleData.GetAll(conn, status);
if (dr.HasRows)
{
while (dr.Read())
{
Role role = new Role();
role.Id = int.Parse(dr["Id"].ToString());
role.Name = dr["Name"].ToString();
role.CreatedBy = dr["CreatedBy"].ToString();
role.CreatedDate = (string.Empty.Equals(dr["CreatedDate"].ToString()) ?
DateTime.MinValue :
DateTime.Parse(dr["CreatedDate"].ToString()));
role.UpdatedBy = dr["UpdatedBy"].ToString();
role.UpdatedDate = (string.Empty.Equals(dr["UpdatedDate"].ToString()) ?
DateTime.MinValue :
DateTime.Parse(dr["UpdatedDate"].ToString()));
listRole.Add(role);
}
}
return listRole;
}
catch (OleDbException ex)
{
throw new Exception("OleDb Error: " + "\n" + ex.Message);
}
catch (Exception e)
{
throw new Exception(e.Message);
}
finally
{
conn.Close();
}
}
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Can anyone help me in detecting vehicles form still images or from video.
what I want to do is, detect the vehicles and get the vehicle count.
This system is developed for my college project.
I'm really appreciated if someone can give me any sample code or any similar source code for reference.
Thank you..
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Repost
modified on Saturday, May 8, 2010 3:23 AM
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I don't think it is possible to detect vehicle from image/video.
Because for detecting it we need to implement algorithm for
detection.
I do not found such algorithm anywhere. (However face recognition algorithm exists to do the same.)
Jinal Desai - LIVE
Experience is mother of sage....
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Cool answer, if others can't do it, then I surely can't!
I have no smart signature yet...
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The worst bit is that judging by the quality of his other answers, he is serious...
I have learnt that you can not make someone love you, all you can do is stalk them and hope they panic and give in.
Apathy Error: Don't bother striking any key.
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It is possible to do. Law Enforcement uses software like that for license plate recognition. They could be driving down the road and run every license plate they pass instantly. Pretty impressive software but doubt it is open to C#.
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