|
Hi Everyone,
I got this code:
if(file.Name.StartsWith(Cont_"))
{
engine = new FileHelperEngine(typeof(Contact));
Contact[] details = (Contact[])engine.ReadFile(file.FullName);
foreach(Contact info in details)
{
txtoutput.Text += info.toString();
}
}
else
{
engine = new FileHelperEngine(typeof(OSFUNOUT));
OSFUNOUT[] details = (OSFUNOUT[])engine.ReadFile(file.FullName);
foreach(OSFUNOUT info in details)
{
txtOutput2.Text += info.toString();
}
}
and wanted to change it to this sort of code:
System.Type type;
if(file.Name.StartsWith("Cont_"))
{
type = typeof(Contact);
}
else
{
type = typeof(OSFUNOUT);
}
engine = new FileHelperEngine(type);
type[] details = (type[])engine.ReadFile(file.FullName); *****
foreach(type info in details) ****
{
txtoutput.Text += info.toString();
}
However the lines with the **** are giving me problems, how do I create an instance of that type?
I could change it to
object[] details = engine.ReadFile(file.FullName);
foreach(object info in details) ****
{
txtoutput.Text += info.toString();
}
however i still need then to cast info to the class I'm working with...how would i do this (type)info doesn't work...
thanks. 
|
|
|
|
|
This should work.
Array details = engine.ReadFile(file.FullName) as Array;
if (details == null)
return;
for(int i=0; i < details.Length; ++i)
{
txtoutput.Text += details.GetValue(i).toString();
}
If you need to access a non virtual method of the object.
Use type.GetMethod("methodName").Invoke(details.GetValue(i), null); or
type.GetProperty("propertyName).GetValue(details.GetValue(i), null);
I can imagine the sinking feeling one would have after ordering my book,
only to find a laughably ridiculous theory with demented logic once the book arrives - Mark McCutcheon
-- modified at 14:27 Thursday 1st December, 2005
|
|
|
|
|
Thanks, it works nicely. The help is greatly appreciated.
|
|
|
|
|
Hi,
I've done some "net send" program and it all works great but there is something missing. I want to replace standard popup window with my own, where i can have reply button and textbox for copy-paste of sended text. is this possible in C#?
Thanks in advance.
|
|
|
|
|
|
How can it be done? Do you know any site where i can find some information about this?
|
|
|
|
|
i want to know how can i convert my C# code into its corresponding assembly code for me to convert the assembly code into the corresponding .hex representation or convert it directly to hex ?
cause iam beginner to robotic field and i want to do that to use C# syntax and its OOP style in programming those chips and microcontrollers.
Any help regarding that.
By the way it is possible cause some companies already did that but for java coding style.
Mess With The Best And Die Like The Rest
|
|
|
|
|
If I understand what you want to do correctly you should prepare for bad news. C# doesn't compile to a native assembly language, it compiles to an intermediate form called MSIL. MSIL is JIT (just in time) compiled at runtime by the .NET CLR to native code, and this native code will only get generated if the CLR considers it safe.
All this makes C# an extremely bad choice for low level programming - you have no native code, and what you do have is useless without a .NET runtime for the platform you're running on.
I'd recommend a more traditional language like C++ for what you are trying to do.
Regards,
Rob Philpott.
|
|
|
|
|
Hi!
I know, When you read this subject you asked yourself "What the problem is this ?!"
Ok, I'm working on a Custom DateTimePicker in Shamsi Calendar User Control (for Iran) like .Net DateTimePicker Control. In first UserControl form i have just one ComboBox and on second form i have several objects.
But I cant change first forms ComboBox's Text from second form !!!
I changed it's Modifiers to public but also i can't access it.
Please Help me about multi page User Controls like this.
Thank You.
-- modified at 5:21 Wednesday 30th November, 2005
|
|
|
|
|
freshonline2003 wrote: I changed it's Modifiers to public but also i can't access it.
Really? Could you post some code that illustrates the problem?
Regards
Senthil
_____________________________
My Blog | My Articles | WinMacro
|
|
|
|
|
Hello Again
Dear S.Senthil Kumar
I started new Windows User Control project, I named that form to 'ucFirst'. I just added one ComboBox to it and change it's Modifier to public, then i added another User Control and named it 'ucSecond' and added several objects like panel and labels to it and changed Modifier property of them to public. Now i can access ucSecond's object from ucFirst as :
ucSecond copyucSecond = new ucSecond() ;
copyucSecond.Label1.Text = "something" ;
but i dont need this, Problem is I want to access ucFirst's ComboBox from ucSeond.
when i'm in ucSecond's code section and i want to type ucFirst i see in autocomplete there is no ucFirst and i have not access to ucFirst !!!
Ok, If you can Please help me about this.
So Thanks for your attention.;)
|
|
|
|
|
Hi Everybody,
While using the compute sum method of the Dataset, I'm getting an error like Invalid usage of aggregate function Sum() and Type: String. How to solve this. Pls help me whoever knows this problem.
Thanks
Raja Raman S
Reuters India Pvt.Ltd.
Bangalore
|
|
|
|
|
Hello raja_raman
It seems that you want to obtain a Single Value from a Database.
if your problem is this i use SqlCommand :
SqlCommand ordersCMD = new SqlCommand("SELECT Sum(orderprice) FROM Orders", nwindConn);
Int32 count = (Int32)ordersCMD.ExecuteScalar();
Maybe this solve your request, if not please mail me more about that.
I can help you.
Bye.
|
|
|
|
|
Hi,
Thank you very much for the mail. I'm sorry that I didn't make clear well about my query. I didn't want to obtain the value from Database. All the computed values which are stored in Database are displaying correctly. My problem is while computing that sum, I'm getting the error. Let me give you an example so as to make more clear.
Suppose I have a dataset called Ds1 which contains two fields, namely Country and No.of Women DegreeHolders. Say, for Eg. UK-50, US-40, Africa - 20, India - 80 etc. like that. Now If I try to take the sum of all Women Degreeholders of all the countries,say 190, it is giving error. I cannot take the sum from Database. I want take the sum from Dataset. Hope this is clear. Thanking you once again for your sincere help.
Raja Raman S
Reuters India Pvt.Ltd.
Bangalore
|
|
|
|
|
Hello Again !
I'm so sorry about my wrong reply about your problem.
I think now i know what is the problem, Please test below code for my second suggestion, may be it can usefull for you :
private void ComputeSumOfWomen(DataSet DS1)
{
DataTable copyTable;
copyTable = DS1.Tables["SampleTable"];
object objSum;
objSum = copyTable.Compute("Sum(noofwomen)", "country = Eng");
}
Compute takes two arguments, You can ignore second argument that is the condition of query and fill it blank like : "" , Again i hope this solves your problem.
And if you know about creating custom user controls, please read my problem with this subject : "Access Second User Control Forms Objects Properties"
Thank you very much.
|
|
|
|
|
hi,
i have to capture frames from a video in c#. for video capturing i am using code on
http://www.codeproject.com/cs/media/DirectShowMediaPlayer.asp
and cannot find code to capture frames from the video. how can i capture frames of video.
Regards
Nav
nav
|
|
|
|
|
The subject says it all,
the explicit typecast
string szMyString;
unsafe
{
char* szChars = (char*) szMyString;
SomeWin32DllFct(szChars);
}
will not compile. I need the string to be type casted as a char* so I can pass the content of the string as a parameter in a function imported from a win32 API.
Any idea?
-Sly
"there are 3 types of people in this world. There are those who understand binary, and those who don't."
|
|
|
|
|
nevermind, I found the answer to my own question.
Here it is:
using System.Runtime.InteropServices;
String l_szStringName = "I.C. Weiner";
// Convert string to char*
char* l_szCharName = (char*) Marshal.StringToHGlobalAuto(l_szStringName);
// Convert char* to String
string l_szMyString = Marshal.PtrToStringAnsi((IntPtr) l_szName);
-Sly
"there are 3 types of people in this world. There are those who understand binary, and those who don't."
|
|
|
|
|
Hi there,
i have a little problem with the looping can any one help to solve me this problem. the following are the code snippets.
objTempNodes = objXml.SelectNodes("//dc:relation/dcterms:isPartOf",objNameSpaceMgr);
sData[29] = "";
string relation_ispartof="";
string relation_ispartofURL="";
string relation_ispartofCol="";
foreach(XmlNode objNode in objTempNodes)
{
if (objNode.Attributes.Count == 0)
{
relation_ispartof=objNode.InnerText;
if (relation_ispartof.Trim()!="")
relation_ispartof = RemoveDups(relation_ispartof);
objNode.InnerText = relation_ispartof;
}
else
{
foreach(XmlAttribute ElementAttr in objNode.Attributes)
{
if (ElementAttr.Value=="dcterms:URL")
{
relation_ispartofURL=objNode.InnerText;
if (relation_ispartofURL.Trim()!="")
relation_ispartofURL = RemoveDups(relation_ispartofURL);
objNode.InnerText = relation_ispartofURL;
}
if (ElementAttr.Value=="nlbterms:Collections")
{
string strtmpCol="";
strtmpCol=objNode.InnerText;
int r = 0;
r=strtmpCol.IndexOf("~",0,strtmpCol.Length);
if (r!=-1)
{ string [] arrCollection = strtmpCol.Split("~",strtmpCol.Length);
string [] newarrCollect;
for (int collectCount=0;collectCount
|
|
|
|
|
Use the pre tag when pasting code so that the indentation is preserved, that will make the code readable.
---
b { font-weight: normal; }
|
|
|
|
|
{
string strtmpCol="";
strtmpCol=objNode.InnerText;
int r = 0;
r=strtmpCol.IndexOf("~",0,strtmpCol.Length);
if (r!=-1)
{ string [] arrCollection = strtmpCol.Split("~",strtmpCol.Length);
string [] newarrCollect;
for (int collectCount=0;collectCount {
string strArrCollection = arrCollection[collectCount];
if (newarrCollect.Length ==0)
{
newarrCollect.SetValue(strArrCollection,collectCount);
}
{
int r1 =0;
r1 = strtmpCol.IndexOf("~",0,strtmpCol.Length);
}
}
}
string [] arrCollection = strtmpCol.Split(new Char []{'~'},strtmpCol.Length);
string [] newarrCollect = RemoveDupsSp(arrCollection);
early it was using the below hardcode syntax which take only single value when i get value like 10100~10200 or 10100~10100 it cant able to display the data if we get value like 10100~10100 then it show display general same we we get value like 10100~10200~10400 then it show display general | Reference | Exclusive and if i get value like 10100~10100~10200 then it show display like general | referenc..etc
{
if (strtmpCol.Trim()=="10100")
relation_ispartofCol = "General";
if (strtmpCol.Trim()=="10200")
relation_ispartofCol = "Reference";
if (strtmpCol.Trim()=="10400")
relation_ispartofCol = "Exclusive";
//Final Storage of relation_ispartof
sData[29] = "Collection:" + relation_ispartofCol + "~URL:" + relation_ispartofURL + "~DOI " + relation_ispartof;
|
|
|
|
|
HELP REQD.
Trying to move from VB6 to C# (v2003) I made a MDI application which calls up Child forms from the main Menu of the MDI form. The menu Item is disabled when selected and the Child form shows up. It works fine till this point with the following code. mnuMHlagreement is the Name of the menu Item and frmLicence is the Child form.
private void mnuMHlagreement_Click(object sender, System.EventArgs e)
{
showForm(new frmLicence(), mnuMHlagreement);
}
private void showForm(Form formName, MenuItem menuName)
{
// Disable Menu Item
menuName.Enabled=false;
// Set the Parent Form of the Child window.
formName.MdiParent = this;
// Set Background Colour.
formName.BackColor = cFrmBClr;
// Display the new form.
formName.Show();
}
Now I want to enable the menu Item on the parent MDI form when the Child form is closed, which so far I have not been able to do. I am sure almost all of you out there know how it is done. So please let me know too.
Also in VB6 we could add Modules where all the Global declarations, etc. were made. In the above example cFrmBClr is a variable which holds the COlor selected at runtime from a ColorDialog on the MDI form. How do I make this a Global variable so that it can be accessed from any form.
I THANK YOU IN ANTICIPATION OF YOUR VALUABLE HELP.
BIK
|
|
|
|
|
If you want a parent form to do something based on the action of a child, the best way is to set up a delegate, so that a method in the main form gets called by your child form code, without the two being tightly coupled. 'delegate event C# site:msdn.microsoft.com' is the google string to get the info you need here.
us_bik wrote: How do I make this a Global variable so that it can be accessed from any form.
.NET, wisely, does not allow the hackery of global variables. If you need something to be visible, make it a static property on a class, then you can access it from anywhere with className.PropertyName.
Christian Graus - Microsoft MVP - C++
|
|
|
|
|
Hi friends,
I am working on Web Application using C#. How can i send the post data(The data may have an object of a class) from one page to the next page.
I did't find in Request.Forword(), Server.Transfer() methods. In Java we
have RequestDispatcher class. Can i know what is the similar thing in C#.
If there is no class like this, please let me know the alternative solution.
I want, the end user should not get the URL/Query Parameters of the next page
in the Address Bar of his Browser.
Is it possible 
Thanks,
Murthy.
-- modified at 23:28 Tuesday 29th November, 2005
|
|
|
|
|
General 
News 
Suggestion 
Question 
Bug 
Answer 
Joke 
Praise 
Rant 
Admin 
Submit an article or tip
