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I've found that naming them allows the use of a parameter value multiple times in the statement.
And is it an OleDb thing or a Jet Engine thing?
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I never bothered to figure that one out. I'm guessing that since you can't do it in VA code in Access either that the "problem" would be tied to Jet, but I could be wrong.
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hi everyone,
i have a picture box and i set pic's from database to it...bud the size of my images are bigger then the size of my picturebox...how can i fix this? what should i do to make the images programmaticaly smaller that they fix in the picturebox? thanx
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Use The SizeMode Propertie
kobkob
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Hi!
I have a property grid and I set to its SelectedObject an instance of a class. This class has some properties which I don't want to be displayed in the property grid. Is there an attribute to set before those properties to make PropertyGrid to ignore them?
Thanks,
Lukas
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Check this[^] out.
Take care,
Tom
-----------------------------------------------
Check out my blog at http://tjoe.wordpress.com
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and if this is not enough (for example if you have no access to the source code of your target instance), you can define a Type descriptor that will filter the unwanted properties. See this article[^].
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con.Open();
object[] objArrRestrict;
//select just TABLE in the Object array of restrictions.
//Remove TABLE and insert Null to see tables, views, and other objects.
objArrRestrict = new object[] {null, null, null, "TABLE"};
DataTable schemaTbl;
schemaTbl = con.GetOleDbSchemaTable(OleDbSchemaGuid.Tables,objArrRestrict);
// Display the table name from each row in the schema
foreach (DataRow row in schemaTbl.Rows)
{
listBox.Items.Add(row["TABLE_NAME"]);
}
instead of using list box,i want to add tables to tree veiw
what can i do???????????/
chanzeb chaudhary
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use treeview1.nodes[0].add()....but a treeview can have child nodes recursively so how do you want to show the obtained rows in treeview ?
Koushik
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int i = 0;
foreach (DataRow row in tbs.Rows)
{
treeVu1.Nodes[i].Add(row["TABLE_NAME"]);
i = i + 1;
}
But it does not work.
ERROR Message "Cannot apply indexing with [] to an expression of type 'method group"
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hey use the following...
foreach (DataRow row in tbs.Rows)
{
treeVu1.Nodes.Add(row["TABLE_NAME"].ToString());
}
Koushik
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hey guyz..im having a problem about my application, it has a profile form, with picture, this picture is being converted to bytes and save it to database, when the form loads, it will create a temporary file..and display the picture.. but the problem here is that, whenever i changed the picture of a certain profile, it will still displays the previous one, because the "file is being used". I can't see the effect, unless i stop the application and run it again.. i hope you can help me with this..tnx in advance
some codes:
strfn = AppDomain.CurrentDomain.BaseDirectory + "profile_pic\\" + dgProfile[dgProfile.CurrentRowIndex,0].ToString();
FileStream fs = new FileStream(strfn,FileMode.Create,FileAccess.Write);
fs.Write(imageByte,0,imageByte.Length);
fs.Flush();
fs.Close();
picBoxProfile.Image = Image.FromFile(strfn);
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How do you read the bitmap ? If you pass the path to the constructor, this is what's holding the file open.
Christian Graus - Microsoft MVP - C++
"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )
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Hi,
Image.FromFile() is known to lock the file for as long as the image is alive;
I suggest you try and use Image.FromStream() instead. The stream you use can be
a FileStream, but it can also be a MemoryStream, so maybe you don't need a file at all.
Luc Pattyn [Forum Guidelines] [My Articles]
this months tips:
- use PRE tags to preserve formatting when showing multi-line code snippets
- before you ask a question here, search CodeProject, then Google
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Hi all,
Is there any way, given an item in a dictionary D, to find its key(s), besides iterating through it? Would using another data structure helps if so which? (I seem to recall a solution for C++, but I can't definitely remember it and not sure if it applies to C#)
Thanks in advance!
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You basically build two dictionaries, one in each direction. I think there are C++ classes that do a bidirectional hash table.
Christian Graus - Microsoft MVP - C++
"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )
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I am creating TabPages dynamically, adding a few textboxes, buttons etc.
I can't figure out though how to access these controls. I tried:
foreach (TabPage tp in tabControl1.TabPages)
{
foreach (Control c in tp)
{
if (c is CheckBox)
{
if (c.Enabled == true)
MessageBox.Show ("Enabled");
}
}
}
but get the error that TabPage does not contain a definition for GetEnumerator().
As the controls are created dynamically, I can't access them by name in the code.
Any ideas on how to access these controls?
-- modified at 4:06 Thursday 11th October, 2007
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That sounds odd, I would have thought what you're doing is fine.
Try changing the outer loop from a foreach to a standard for loop. The implication is that the TabPages collection does not implement IEnumerable.
Regards,
Rob Philpott.
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we can do like the following one...
foreach (TabPage tp in tabControl1.TabPages)
{
for (int i = 0; i < tp.Controls.Count;i++)
{
if (tp.Controls[0] is CheckBox)
{
if(((CheckBox)(tp.Controls[0])).Enabled)
MessageBox.Show ("Enabled");
}
}
}
Koushik
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oh yes, just spotted it.
its this :
foreach (Control c in tp)
should be;
foreach (Control c in tp.Controls) or something like that. Can't remember what the collection is called.
Regards,
Rob Philpott.
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Thanks guys, the
foreach (Control c in tp.Controls) was what I needed.
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hi all,
can an object created for abstract class and interface?
can i use a static method in abstract class?
if i am using all methobs in abstract class as abstract method then how it vary from interface.why cannot i use an interface instead.
ganesh
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Interface is like a contract that defines the structure of a class.
if a class implement that interfac it would have to do all that it singed at the "contract"
thungs that can be defirnd in an interface :
Methods
Indexers
Events
no :
Data members
Static
Constructor / destructor
no private / public before methods
have a nice day
p.s:
if we did not had abstact/interface
things would go and messy as they where
kobkob
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kobibi wrote: Static
I really dont like it. I have a plenty of classes implementing ICorrector interface, which have not any fields - they are expected to have a static method which would validate some user's input. But instead I have to create an instance of a class to call this validate method 
Greetings - Gajatko
Portable.NET is part of DotGNU, a project to build a complete Free Software replacement for .NET - a system that truly belongs to the developers.
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