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hi,
i think you will instant answers once if you submit thsi queary on Asp.Net forum.
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S r e e j i t h N a i r
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Hi. I need to add the help to my application. I want to add a chm file. I'm trying with HelpProvider, but it only shows the help pressing F1. How can I show it pressing a main menu item?
Regards,
Diego F.
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hi,
Eg 1.
Write this much in code in your menu event handler
System.Diagnostics.Process.Start(Hlp.HelpNamespace.ToString());
Eg 2.
You can use app.config file to store your .chm file and then try call your .chm file through starting a process.
System.Diagnostics.Process.Start(ConfigurationSettings.AppSetting[0].ToString())
Both are using Process.Start() method to call your external .chm file.
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S r e e j i t h N a i r
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Thank you, but where is the dll to use System.Process? I can't find it in Visual Studio 2003 Professional.
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hi,
System.Diagnostics.Process.Start(Hlp.HelpNamespace.ToString());
if you are trying to show help using app.config then you need to add a namespace called
using System.Configuration;
And then you can use like this
System.Diagnostics.Process.Start(ConfigurationSettings.AppSettings["helpfile"].ToString())
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S r e e j i t h N a i r
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Thank you! It's working now 
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You don't need the .ToString() calls. Both HelpNamespace and AppSettings[] return Strings to begin with. Why execute .ToString() on a String object?
RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome
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I would like to cretate excel files with my app written in C#, is it possible?
Does someone have an example?
thanks
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hi,
I would like to cretate excel files with my app written in C#, is it possible?
Do you want to export your data into excel file format or You want to create a excel sheet from C#.
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S r e e j i t h N a i r
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Export them, i have my data sorted in files (text files) someth like this:
STATE X Y
1 2112 54545
2 344 342 etc..
I need to create diagrams from this data, and because of that I need a File to be opened in Excel
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hi,
Oki. Please go through this link. This is your correct requirement.
http://www.experts-exchange.com/Programming/Q_20970156.html
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S r e e j i t h N a i r
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THANKS
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Hi,
Which one is faster ?? Value Type or Reference Type.
Regards,
Hatim Ali.
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hi,
I don't know in which sence that you are asking 'Value Type or Reference Types are fast'. I recommand you to read some C# syntax and C# basics.
Value type and reference types are two type of Common Type System. We can say all numeric types are value type and which are stored in stack memory. Variables of reference types, referred to as objects, store references to the actual data. Reference type store data in Managed Heap memory.
And the visibility of both types are entirly different.
In some cases we need to convert value type to reference type or reverse. So this is also possible.
Converting value type data into reference type data is called BOXING.
Converting Reference type data into value type data is called UNBOXING.
I recommand you to read MSDN or some book which explain the C# language.
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S r e e j i t h N a i r
**************************;)
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Objective answer: Value types are faster.
Notes:
If you have a finite (and preferably short) storage requirement, value types (for example a structure) are your best friends. But use them lavishly and you will end up with a Stack overflow.
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Here is my problem:
I have done a web application; on this web application you can start a "slideshow". This slideshow consists of four pages that display data in tables and graphs. Each page get a lot of data from the database (SQL Server) and some of the pages use a lot of nestled ArrayLists to calculate the data before it's presented. Everything is done in c# and I use the data application block from MS.
The problem: I start the problem and the pages are displayed fine (the user can choose the delay in seconds before the next page are displayed, in this case 10 seconds). After 30 minutes - x hours Internet Explorer just hangs (the whole page turns white and no code is executed). No error turns up in my errorlog either.
I thought it had something to do with IE, so I've started to do a Windows Form application of this instead. The same (?) problem happens again. The program eats CPU and after 30-60 minuts the CPU is at 100% and the application almost stalls. I have run CLR Profiler but I don’t know how to read the results.
Can anyone help me how to get further with this problem? I’m starting to think if I have the same problem both on my web application and on my windows application? And if so, what is eating CPU? The pages are really simple, no multithreads, just get data in a dataset, transform the data and display it?
Thanks for any help, tips how to get further!
Rgds,
Stefan
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Could you either post or send that code so that we can see? It's hard to pinpoint your problem when its like this without seeing it.
Steve Maier, MCSD MCAD
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I have tried to dispose all datasets both in the windows version and the web version. No luck with the windows application though, still eats CPU.
When I test this I only use one page so the code is quite simple. We have one Main form that handles what page to show etc and one subform that displays the data.
Here is the code that is executed every 10 seconds from the main form:
private void timer2_Tick(object sender, System.EventArgs e)<br />
{<br />
YO.WindowState = FormWindowState.Maximized;<br />
TS.WindowState = FormWindowState.Maximized;<br />
MG.WindowState = FormWindowState.Maximized;<br />
DG.WindowState = FormWindowState.Maximized;<br />
<br />
string sTime = dataContainer.getTime().ToString();<br />
string sLimit = dataContainer.getLimit().ToString();<br />
string sVolume = dataContainer.getVolume().ToString();<br />
string sPages = dataContainer.getPages();<br />
string sProducts = dataContainer.getProducts();<br />
string sUnits = dataContainer.getUnits();<br />
<br />
ArrayList arrPages = YieldMonitorEngine.ExtractPages(dataContainer.getPages());<br />
ArrayList arrProducts = YieldMonitorEngine.ExtractProducts(dataContainer.getProducts());<br />
<br />
switch (int.Parse(sPageToView))<br />
{<br />
case AppConstants.MONITOR_YIELD_OVERVIEW: <br />
<br />
YO.InitializePage (int.Parse(sPageToView), int.Parse(sProductToView), int.Parse(sTime), <br />
double.Parse(sLimit), int.Parse(sVolume), sPages, sProducts, sUnits);<br />
MG.Hide();<br />
DG.Hide();<br />
TS.Hide();<br />
YO.Show();<br />
YO.Refresh();<br />
YO.Update();<br />
break;<br />
case AppConstants.MONITOR_YIELD_DETAILS_MONTHLY_GRAPH:<br />
MG.InitializePage (int.Parse(sPageToView), int.Parse(sProductToView), int.Parse(sTime), <br />
double.Parse(sLimit), int.Parse(sVolume), sPages, sProducts, sUnits);<br />
MG.Show();<br />
MG.Refresh();<br />
MG.Update();<br />
YO.Hide();<br />
DG.Hide();<br />
TS.Hide();<br />
break;<br />
case AppConstants.MONITOR_YIELD_DETAILS_DAILY_GRAPH:<br />
DG.InitializePage (int.Parse(sPageToView), int.Parse(sProductToView), int.Parse(sTime), <br />
double.Parse(sLimit), int.Parse(sVolume), sPages, sProducts, sUnits);<br />
DG.Show();<br />
DG.Refresh();<br />
DG.Update();<br />
YO.Hide();<br />
MG.Hide();<br />
TS.Hide();<br />
break;<br />
case AppConstants.MONITOR_TOP_SYMPTOMS:<br />
TS.InitializePage (int.Parse(sPageToView), int.Parse(sProductToView), int.Parse(sTime), <br />
double.Parse(sLimit), int.Parse(sVolume), sPages, sProducts, sUnits);<br />
TS.Show();<br />
TS.Refresh();<br />
TS.Update();<br />
YO.Hide();<br />
MG.Hide();<br />
DG.Hide();<br />
break;<br />
}<br />
<br />
<br />
string sLastViewedProduct = sProductToView;<br />
string sLastViewedPage = sPageToView;<br />
<br />
int iIndexOfLastViewedProduct = arrProducts.IndexOf(sLastViewedProduct.ToString());<br />
<br />
if (iIndexOfLastViewedProduct + 1 < arrProducts.Count) <br />
{<br />
sProductToView = arrProducts[iIndexOfLastViewedProduct + 1].ToString();<br />
sPageToView = sLastViewedPage;<br />
}<br />
else <br />
{<br />
sProductToView = arrProducts[0].ToString();<br />
<br />
int iIndexOfLastViewedPage = arrPages.IndexOf(sLastViewedPage.ToString());<br />
<br />
if (iIndexOfLastViewedPage + 1 < arrPages.Count) <br />
{<br />
sPageToView = arrPages[iIndexOfLastViewedPage + 1].ToString();<br />
}<br />
else <br />
{<br />
sPageToView = arrPages[0].ToString();<br />
}<br />
}<br />
<br />
arrPages.Clear();<br />
arrProducts.Clear();<br />
}
When I test the application I only test with the case AppConstants.MONITOR_TOP_SYMPTOMS, so that's the code that is executed. The TS.InitializePage code looks like this:
public void InitializePage (int iPageToView, int iProductToView, int iTime, double dLimit, int iVolume,<br />
string sPages, string sProducts, string sUnits) <br />
{<br />
dgUnit1.DataSource = null;<br />
dgUnit2.DataSource = null;<br />
dgUnit3.DataSource = null;<br />
dgUnit4.DataSource = null;<br />
<br />
DateTime dtTestDate = DateTime.Parse(DateTime.Now.AddDays(iNoDaysFromTodayToView).ToShortDateString());<br />
ArrayList arrProducts = YieldMonitorEngine.ExtractProducts(sProducts);<br />
ArrayList arrUnitGroups = YieldMonitorEngine.ExtractUnitGroups(sUnits);<br />
<br />
ArrayList arrUnitsForProduct = YieldMonitorEngine.ExtractUnitsForProduct(iProductToView, arrProducts, arrUnitGroups);<br />
<br />
DataSet dsProduct = YieldMonitorEngine.GetProductInfo(iProductToView);<br />
<br />
if (dsProduct != null && dsProduct.Tables[0].Rows.Count > 0) <br />
{<br />
string sModelName = dsProduct.Tables[0].Rows[0][DBConstants.PRODUCT_MODEL].ToString();<br />
<br />
lblTitle.Text = "Top Symptoms for " + sModelName + " - " + dtTestDate.ToString("MMMM d, yyyy");<br />
}<br />
<br />
if (arrUnitsForProduct.Count > 0) <br />
{<br />
dgUnit1.Visible = true;<br />
InitializeDataGrid(int.Parse(arrUnitsForProduct[0].ToString()), iProductToView, dtTestDate, dgUnit1, lblUnit1, dLimit, iVolume);<br />
}<br />
else <br />
{<br />
dgUnit1.Visible = false;<br />
}<br />
<br />
if (arrUnitsForProduct.Count > 1) <br />
{<br />
dgUnit2.Visible = true;<br />
InitializeDataGrid(int.Parse(arrUnitsForProduct[1].ToString()), iProductToView, dtTestDate, dgUnit2, lblUnit2, dLimit, iVolume);<br />
}<br />
else <br />
{<br />
dgUnit2.Visible = false;<br />
}<br />
<br />
if (arrUnitsForProduct.Count > 2) <br />
{<br />
dgUnit3.Visible = true;<br />
InitializeDataGrid(int.Parse(arrUnitsForProduct[2].ToString()), iProductToView, dtTestDate, dgUnit3, lblUnit3, dLimit, iVolume);<br />
}<br />
else <br />
{<br />
dgUnit3.Visible = false;<br />
}<br />
<br />
if (arrUnitsForProduct.Count > 3) <br />
{<br />
dgUnit4.Visible = true;<br />
InitializeDataGrid(int.Parse(arrUnitsForProduct[3].ToString()), iProductToView, dtTestDate, dgUnit4, lblUnit4, dLimit, iVolume);<br />
}<br />
else <br />
{<br />
dgUnit4.Visible = false;<br />
}<br />
<br />
dsProduct.Dispose();<br />
arrProducts.Clear();<br />
arrUnitGroups.Clear();<br />
arrUnitsForProduct.Clear();<br />
}<br />
<br />
<br />
private void InitializeDataGrid(int iSupplyUnitID, int iProductID, DateTime dtTestDate, DataGrid dgUnit, Label lblUnit, double dSymptomLimit, int iMinStationVolume)<br />
{<br />
try <br />
{<br />
DataSet dsSupplyUnit = YieldMonitorEngine.GetSupplyUnitInfo(iSupplyUnitID);<br />
if (dsSupplyUnit != null && dsSupplyUnit.Tables[0].Rows.Count > 0) <br />
{<br />
lblUnit.Text = dsSupplyUnit.Tables[0].Rows[0][DBConstants.SUPPLY_UNIT_SHORT_NAME].ToString();<br />
}<br />
<br />
DataSet dsTopSymptoms = YieldMonitorEngine.GetSymptomYieldDailySUMTopSymptoms(iSupplyUnitID, iProductID, dtTestDate, dSymptomLimit, iMinStationVolume);<br />
dsTopSymptoms.Tables[0].TableName = "TopSymptoms"; <br />
dgUnit.DataSource = dsTopSymptoms.Tables["TopSymptoms"];<br />
<br />
if (dsTopSymptoms.Tables["TopSymptoms"].Rows.Count == 0)<br />
{<br />
dgUnit.Visible = false;<br />
}<br />
else<br />
{<br />
dgUnit.Visible = true;<br />
}<br />
<br />
dsTopSymptoms.Dispose();<br />
dsSupplyUnit.Dispose();<br />
<br />
dgUnit.Enabled = false;<br />
<br />
DataGridTableStyle dgts = new DataGridTableStyle();<br />
<br />
dgts = new DataGridTableStyle();<br />
dgts.MappingName = "TopSymptoms";<br />
<br />
dgts.AlternatingBackColor = Color.LightGray;<br />
<br />
DataGridTextBoxColumn TextCol = new DataGridTextBoxColumn();<br />
TextCol.MappingName = "SymptomName";<br />
TextCol.HeaderText = "Symptom";<br />
TextCol.ReadOnly = true;<br />
TextCol.Width = 250;<br />
dgts.GridColumnStyles.Add(TextCol);<br />
<br />
TextCol = new DataGridTextBoxColumn();<br />
TextCol.MappingName = "StationName";<br />
TextCol.HeaderText = "Station";<br />
TextCol.ReadOnly = true;<br />
TextCol.Width = 250;<br />
dgts.GridColumnStyles.Add(TextCol);<br />
<br />
TextCol = new DataGridTextBoxColumn();<br />
TextCol.MappingName = "YieldLossTest1";<br />
TextCol.HeaderText = "Yield Loss";<br />
TextCol.Format = "P";<br />
TextCol.ReadOnly = true;<br />
TextCol.Width = 250;<br />
dgts.GridColumnStyles.Add(TextCol);<br />
<br />
dgts.RowHeadersVisible = false;<br />
<br />
dgUnit.TableStyles.Clear(); <br />
<br />
<br />
dgUnit.TableStyles.Add(dgts);<br />
}<br />
catch (Exception ex) <br />
{<br />
string ssfsfs = "";<br />
}<br />
}
Can it be that I for some reason have some objects that I havn't disposed that I should? I thought .NET handled this automatically but seems like it wasn't that easy?
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Dear CPians,
I have a problem within my ASP.NET application. The reason I am posting it on this Forum is that the problem is not Web related, its 100% C#.
I upload an image and I create an Image object from it. I do some Image manipulation like rescaling, rotating etc. and I create a Bitmap object from it.
Then I create another Bitmap object which is the Thumbnail of the first one.
I end up with two Bitmap objects. The original one and the thumnail. Now I need to save the two into the DataBase, (SQL Server 2000).
How can I convert the two Bitmap objects into byte arrays (byte[])? Any ideas?
Thanking you in advance!
theJazzyBrain
Excellence is not an act, but a habit! Aristotle
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How can i get system information, such as ip adresses,hdd properties, directories...etc of a local computer?
Can u give some examples?
Please help me
Tahnks everybody
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For example:System.Windows.Forms.MessageBox.Show(Environment.CurrentDirectory);
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You would have to get most, if not all, of this information using the System.Management namespace and WMI (Windows Manangement Instrumentation).
You can find examples of this on CP if you just search the Articles for 'WMI'. One example is right here[^].
RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome
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I made an addin by using the Addin-Wizard of Visual .NET.
I should like to install this addin on the next configuration:
- A PC with Windows XP
- there can be several users, but they haven't administrator rights.
- The installation of the addin must work in the administrator mode, but users should use it in restricted mode (not admin mode in Windows XP).
So, I have problems, because the addin fail when it is launched in restricted mode.
Visual .Net print the addin failed during the loading.
Do you know a solution for this problem ?
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