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I am writing my own de/serialization and I need this to serialize object, that consist of other objects. Each of these objects will have a special function to serialize itself. I don`t want to make property to all fields, it`s a waste of time
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I don't see any reason to use reflection to do this, if you have control over the objects yourself. There are loads of well behaving object oriented ways to handle it.
Why not make an interface containing a method for the object to serialize itself, and let the objects implement it. Each object would be responsible for calling it's own members to serialize them.
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The idea is not to write anything special to every object. And the normal serialization is not possible, since it cannot accept multiple-dim arrays
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I want to store password in database as encrypted. How can I do that?. Please somebody forward me an API for Encrypt/Decrypt in C#.NET
Suseel Kumar P
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I got some source to enchiper and dechiper, if you want I could send you the code...
It's the safest algorithm ever developed, but you'll need a really long password for it to be that safe...
Niklas Ulvinge aka IDK
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It's 2 methods to be more secure password in DataBase:
1) Encript with RSA256 or higher, more examples is on MSDN
Primary key store in DB, other key in App.
For more secure, protect Application with .NET Reactor from http://www.eziriz.com/[^]
This tool not freeware, but cost not to much and protecting .NET .exe
files Well;)
2) Other method is use only MD5 checksum and compare from DB pass, so encript
entered password with MD5 and compare value with DB password what is in MD5.
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The safest way to store the password is to add some salt to it (please keep the salt somewhere safe and secure too!), encrypt the password using your favorite high-strength algorithm, then store the generated hash in the database. When you have to validate a password, put the attempted password through the same routine and compare the generated hash to what stored in the database.
RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome
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I am trying to write a windows application in C#. I met a problem when I try to use the OdbcCommandBuilder to update the database. The connection works fine. The code is like following:
OdbcDataAdapter adapter = new OdbcDataAdapter("select * from machine", _connection);
OdbcCommandBuilder cb = new OdbcCommandBuilder(adapter);
DataRow arow = _ds.Table["machine"].newrow();
arow["StockNo"] = "abc01";
_ds.Table["machine"].rows.add(arow);
adapter.Update(_ds, "machine");
_ds.Table["machine"].AcceptChanges();
When I try to run this code to insert a new machine record, it gives me an error message which says
"ERROR [07006] Restricted data type a attribute violation (SQL_C_NUMERIC)"
Could somebody solve this problem for me please???
Thanks in advance
Asura
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This may cause of missmatch in data types. Please try to check your stored prodecure or table structure for more information about data type.
Note : Especially feild have NUMERIC Data Type
Sreejith Nair
[ My Articles ]
-- modified at 6:56 Thursday 22nd September, 2005
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Yes, you are right, in the machine table there are two field which is defined as decimal(10,2). When I delete the two fields, it works fine now. But I still need the two fields as the currency field. Do you know what can I do for the type conflict please?
Asura
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Use a floating point type instead, like real/float/single/double (name depends on database interface).
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There i issue with decimal feild untile you passes such feild through your code. I would like to point a block of code which is posted by you.
DataRow arow = _ds.Table["machine"].newrow();<br />
arow["StockNo"] = "abc01";<br />
_ds.Table["machine"].rows.add(arow);<br />
adapter.Update(_ds, "machine");<br />
_ds.Table["machine"].AcceptChanges();
As per you last comment you have two more feild with decimal value. But you are inserting only one value through your code. I nevar mean this is the reason of your entire dificulty.
DataRow arow = _ds.Table["machine"].newrow();<br />
arow["StockNo"] = "abc01";<br />
arow["Price"] = ConvertTo.Decimal(GrandTotal)<br />
arow["GrandTotal"] = ConvertTo.Decimal(GrandTotal)<br />
_ds.Table["machine"].rows.add(arow);<br />
adapter.Update(_ds, "machine");<br />
_ds.Table["machine"].AcceptChanges(); Try tis code.
Sreejith Nair
[ My Articles ]
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Hi There,
I would like to drag some selected text in a textbox and drop in some other locaiton of the same textbox.Now my question is while dropping how to find the cursor position so that i cna append the dropped text to the previous text.
Thanks in advance,
Cheers,
Manohar.
Thanks & Regards,
Manohar
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Hello,
Is-it possible to assign an ImageList to a TreeView but to display images not for all nodes ?
I'd like to display images for some nodes but only text for others.
Thanks.
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They either all get images or none of them. But, there's nothing that says you have to supply a visible image. Make a blank image your default image for all of your nodes. Where you need to supply an image, no big deal, just add it to the ImageList and setup the Node to point to it.
RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome
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Thanks for your answer.
I've already put a "blank" image but that visually makes a "hole" that is not really "sexy". Anyway I don't want to rewrite TreeView's OnPaint method.
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By "hole", do you mean that there is an empty space where the icon would normally go? That's what's going to happen.
At this point, you'll either need to find a 3rd party control with the exact functionality that you're looking for, or you'll have to write the drawing code yourself.
RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome
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I'm using OpenRemoteSubkey method to get registry key in remote computer. I have list of computers in AD and use the list to get computer name but how can I find out if each computer is alive in the network now, cause if one computer is not turn on it will take a long time , the method throuwn exception that network path does not exists or in simple statement I wanna set timeout for this function.
Mazy
"One who dives deep gets the pearls,the burning desire for realization brings the goal nearer." - Babuji
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Try to PING the IP address first. That'll at least tell you if the machine is up, but it won't tell you if the Remote Registry service is running.
RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome
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i need to get the variable name of a variable in C#.
e.g. string firstName = "jhon";
i need to get string "firstName" against it.
does anyone have idea.
thanx in advance.
regards
AbdulBasit Hammad.
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Take a look at the System.Reflection namespace. Exactly how to do it depends a bit on the context (how do you know which fields you are interested in etc).
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Hi, does anyone know how it is possible to get the vertical scrollbar to be thicker than it currently is? My reason is that the system is targeting touch screen users, and therefore the current scrollbar is too small. I would like to double the size if possible. Thanks
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My problem: When the for loop funs it only verifies that the first file exists. The second time it runs through it auto-matically thinks the second file it is checking exits and writes the imgUrl path to the data table.
Someone please help!!!
searches run = new searches(System.Configuration.ConfigurationSettings.AppSettings.Get("ConnectionString"));
DataTable dt = new DataTable();
dt = run.searchpersonals(dtsend);
int myMatches = dt.Rows.Count;
dt.Columns.Add( new DataColumn("imgUrl"));
String[] imgUrl = new String[myMatches];
for( int i = 0; i < myMatches; i++)
{
imgUrl[i] = "usergraphics/user" + dt.Rows[i]["profile_id"] + ".jpg";
if( new FileInfo( Server.MapPath(imgUrl[i])).Exists)
{
dt.Rows[i]["imgUrl"] = imgUrl[i];
}
else
{
dt.Rows[i]["imgUrl"] = "usergraphics/default.jpg";
}
}
Repeater2.DataSource = dt;
Repeater2.DataBind();
Sully.... Thank you
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Is it just the second, or all except the first?
Have you checked that the file actually does not exist?
What does the field profile_id contain?
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Can anyone help me out with an example as to how to export a simple asp.net webpage data to an office application like word or excel.
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