public byte[] imageToByteArray(System.Drawing.Image imageIn)
{
MemoryStream ms = new MemoryStream();
imageIn.Save(ms,System.Drawing.Imaging.ImageFormat.Gif);
return ms.ToArray();
}
public Image byteArrayToImage(byte[] byteArrayIn)
{
MemoryStream ms = new MemoryStream(byteArrayIn);
Image returnImage = Image.FromStream(ms);
return returnImage;
}
Thursday, July 30, 2009
Image to Byte Array and Byte Array to Image
http://www.codeproject.com/KB/recipes/ImageConverter.aspx
HttpModule Execution Sequence
An application executes events that are handled by modules or user code that is defined in the Global.asax file in the following sequence:
1. BeginRequest
2. AuthenticateRequest
3. PostAuthenticateRequest
4. AuthorizeRequest
5. PostAuthorizeRequest
6. ResolveRequestCache
7. PostResolveRequestCache
After the PostResolveRequestCache event and before the PostMapRequestHandler event, an event handler (a page corresponding to the request URL) is created.
8. PostMapRequestHandler
9. AcquireRequestState
10. PostAcquireRequestState
11. PreRequestHandlerExecute
The event handler is executed.
12. PotRequestHandlerExecute
13. ReleaseRequestState
14. PostReleaseRequestState
After the PostReleaseRequestState event, response filters, if any, filter the output.
15. UpdateRequestCache
16. PostUpdateRequestCache
17. EndRequest
1. BeginRequest
2. AuthenticateRequest
3. PostAuthenticateRequest
4. AuthorizeRequest
5. PostAuthorizeRequest
6. ResolveRequestCache
7. PostResolveRequestCache
After the PostResolveRequestCache event and before the PostMapRequestHandler event, an event handler (a page corresponding to the request URL) is created.
8. PostMapRequestHandler
9. AcquireRequestState
10. PostAcquireRequestState
11. PreRequestHandlerExecute
The event handler is executed.
12. PotRequestHandlerExecute
13. ReleaseRequestState
14. PostReleaseRequestState
After the PostReleaseRequestState event, response filters, if any, filter the output.
15. UpdateRequestCache
16. PostUpdateRequestCache
17. EndRequest
Wednesday, July 29, 2009
byte array to bitmap
http://social.msdn.microsoft.com/Forums/en-US/winforms/thread/e57f7731-c703-4c17-b1a2-32b155f9b745
public static Bitmap BytesToBitmap(byte[] byteArray)
{
using (MemoryStream ms = new MemoryStream(byteArray))
{
Bitmap img = (Bitmap)Image.FromStream(ms);
return img;
}
}
TypeConverter tc = TypeDescriptor.GetConverter(typeof(Bitmap));
Bitmap bitmap1 = (Bitmap)tc.ConvertFrom(byteArray);
Or,
ImageConverter ic = new ImageConverter();
Image img = (Image)ic.ConvertFrom(byteArray);
Bitmap bitmap1 = new Bitmap(img);
Friday, July 24, 2009
Tips
Tip #1 How to behold the power of incremental search
Command: Edit.IncrementalSearch
Shortcut: Ctrl+i
Tip #2 Ctrl+F3 to search for currently-selected word
Command: Edit.FindNextSelected
Tip #3 F3 to search for last thing you searched for
Command: Edit.FindNext
Tip #4 Customize what files to find in
Find In Files – Look in – Choose Search Folders
Tip #5 You can use a reg hack for customizing search results
HKCU\Software\Microsoft\VisualStudio\9.0\Find String Find=$f$e($l,$c):$t\r\n
Editing Tips
Tip #6 How not to accidentally copy a blank line
Tools – Options – Text Editor – All Languages – General, Uncheck Apply cut or copy to blank lines
Tip #7 How to cycle through the Clipboard ring
Command: Edit.CycleClipboardRing
Shortcut: Ctrl+Shift+v
Tip #8 How to use box/column selection in the editor
Command: Edit.LineUpColumnExtend, Edit.LineDownColumnExtend, Edit.CharRightColumnExtend, Edit.CharLeftColumnExtend
Shortcut: Shift+Alt+Arrow
Tip #9 You can copy a file’s full path / open windows explorer from the file tab channel
Command: File.CopyFullPath
Tip #10 Drag and drop code onto the toolbox’s general tab
Shortcut: Ctrl+Alt+x
Tip #11 You can use Ctrl+. to show a smart tag
Command: View.ShowSmartTag
Tip #12 You can insert a snippet by pressing Tab Tab
Type in snippet shortcut, then press Tab Tab
Customizing Tips
Tip #13 You can create temp or throw away projects
Tools - Options - Projects and Solutions - General, uncheck Save new projects when created
Tip #14 Change text editor font size via keyboard (Accessibility macros)
Command: Macros.Samples.Accessibility.DecreaseTextEditorFontSize
Command: Macros.Samples.Accessibility.IncreaseTextEditorFontSize
Tip #15 How to open a file without any UI
Ctrl+/ (or whatever Tools.GoToCommandLine is bound to)
alias fo file.openfile
fo
Tip #16 Guidelines in the editor registry key hack
HKEY_CURRENT_USER\Software\Microsoft\VisualStudio\9.0\Text Editor String RBG(128,0,0) 5, 20
Tip #17 You can create a macro for your import/export settings
Tools – customize – commands – macros – drag and drop macro to toolbar
Tip #18 How to not show the start page (or have the last loaded solution open)
Tools - Options - Environment - Startup, At Startup
Tip #19 File tab channel registry hack
HKEY_CURRENT_USER\Software\Microsoft\VisualStudio\9.0 key, you can create a DWORD UseMRUDocOrdering = 1
Tip #20 How to show Misc Files Project to keep your files around
tools - options - environment – documents, show miscellaneous files in Solution Explorer
Tip #21 Edit project file from within IDE (unload project)
Unload project, edit project, reload project
Debugging Tips
Tip #22 You can use tracepoints to log stuff in your code
Right-click in indicator margin, select breakpoints, select Insert Tracepoint
Tip #23 How to get the find source dialog back
Solution Properties, under Common Properties - Debug Source Files, Delete Do no look for these source files edit box contents
Tip #24 You can disable the exception assistant
Tools – Options – Debugging – General, uncheck Enable the Exception Assistant
Command: Edit.IncrementalSearch
Shortcut: Ctrl+i
Tip #2 Ctrl+F3 to search for currently-selected word
Command: Edit.FindNextSelected
Tip #3 F3 to search for last thing you searched for
Command: Edit.FindNext
Tip #4 Customize what files to find in
Find In Files – Look in – Choose Search Folders
Tip #5 You can use a reg hack for customizing search results
HKCU\Software\Microsoft\VisualStudio\9.0\Find String Find=$f$e($l,$c):$t\r\n
Editing Tips
Tip #6 How not to accidentally copy a blank line
Tools – Options – Text Editor – All Languages – General, Uncheck Apply cut or copy to blank lines
Tip #7 How to cycle through the Clipboard ring
Command: Edit.CycleClipboardRing
Shortcut: Ctrl+Shift+v
Tip #8 How to use box/column selection in the editor
Command: Edit.LineUpColumnExtend, Edit.LineDownColumnExtend, Edit.CharRightColumnExtend, Edit.CharLeftColumnExtend
Shortcut: Shift+Alt+Arrow
Tip #9 You can copy a file’s full path / open windows explorer from the file tab channel
Command: File.CopyFullPath
Tip #10 Drag and drop code onto the toolbox’s general tab
Shortcut: Ctrl+Alt+x
Tip #11 You can use Ctrl+. to show a smart tag
Command: View.ShowSmartTag
Tip #12 You can insert a snippet by pressing Tab Tab
Type in snippet shortcut, then press Tab Tab
Customizing Tips
Tip #13 You can create temp or throw away projects
Tools - Options - Projects and Solutions - General, uncheck Save new projects when created
Tip #14 Change text editor font size via keyboard (Accessibility macros)
Command: Macros.Samples.Accessibility.DecreaseTextEditorFontSize
Command: Macros.Samples.Accessibility.IncreaseTextEditorFontSize
Tip #15 How to open a file without any UI
Ctrl+/ (or whatever Tools.GoToCommandLine is bound to)
alias fo file.openfile
fo
Tip #16 Guidelines in the editor registry key hack
HKEY_CURRENT_USER\Software\Microsoft\VisualStudio\9.0\Text Editor String RBG(128,0,0) 5, 20
Tip #17 You can create a macro for your import/export settings
Tools – customize – commands – macros – drag and drop macro to toolbar
Tip #18 How to not show the start page (or have the last loaded solution open)
Tools - Options - Environment - Startup, At Startup
Tip #19 File tab channel registry hack
HKEY_CURRENT_USER\Software\Microsoft\VisualStudio\9.0 key, you can create a DWORD UseMRUDocOrdering = 1
Tip #20 How to show Misc Files Project to keep your files around
tools - options - environment – documents, show miscellaneous files in Solution Explorer
Tip #21 Edit project file from within IDE (unload project)
Unload project, edit project, reload project
Debugging Tips
Tip #22 You can use tracepoints to log stuff in your code
Right-click in indicator margin, select breakpoints, select Insert Tracepoint
Tip #23 How to get the find source dialog back
Solution Properties, under Common Properties - Debug Source Files, Delete Do no look for these source files edit box contents
Tip #24 You can disable the exception assistant
Tools – Options – Debugging – General, uncheck Enable the Exception Assistant
DatabindExpressions
Digging Into Data Binding Expressions
The case of the "Eval" should be maintained. ie. "E" should be CAPS and remaining should be small.
The case of the "Eval" should be maintained. ie. "E" should be CAPS and remaining should be small.
<%#Eval("ProductName")%>,<%#FormatPrice(Eval("UnitPrice"))%> '<%#DataBinder.Eval(Container.DataItem,"ID")%>' '<%# Eval("ID")%>' '<%# Eval("HotelAmenities").ToString().Replace("±","") %>' '<%# Eval("PropertyID", "Javascript:window.open(\"Map.aspx?PID={0}\")") %>' Call a function from the aspx page when binding using "Eval" ImageUrl ='<%# LoadImage(Convert.ToInt32(((System.Data.DataRowView)Container.DataItem)["StarRate"]),3) %>' LoadImage => Function Name with two parameters starrate and imagenumber Convert.ToInt32(((System.Data.DataRowView)Container.DataItem)["StarRate"]) => Convert "StarRate" to int Concat String with "Eval" Text='<%# "Customer Review: "+ ((System.Data.DataRowView)Container.DataItem)["CustomerRatings"].ToString()+"/5" %>' PostBackUrl='<%# "~/HotelDetails.aspx?PropertyID=" + Eval("PropertyID") %> ' OR PostBackUrl="'<%# "~/HotelDetails.aspx?PID=" + Eval("PropertyID") %> '" PostBackUrl="~/SysAdmin/modifyAnnouncement.aspx?id=<%# Eval("intAnnouncementID")%>" PostBackUrl="~/HotelDetails.aspx?PropertyID=<%# Eval("PropertyID")%>" PostBackUrl="~/HotelDetails.aspx?PropertyID=" + '<%# Eval("ID")%>' PostBackUrl='<%# Eval("PropertyID", "~/HotelDetails.aspx?PropertyID={0}") %>' DataBinder.Eval versus Explicit Casting http://unboxedsolutions.com/sean/archive/2005/03/06/455.aspx http://weblogs.asp.net/rajbk/archive/2004/07/20/what-s-the-deal-with-databinder-eval-and-container-dataitem.aspx As a regular DataBinder.Eval() user, now I feel a little bit guilty after reading this KB article, and I'm curious how many ASP.NET developers use explicit casting on a regular basis. Drop me a line and let me know. Let's say you are binding to a DataSet. This... <%# ((System.Data.DataRowView)Container.DataItem)["au_id"] %> ...is significantly faster than this... <%# DataBinder.Eval(Container.DataItem, "au_id") %> Conditions with Eval <%#(DataBinder.Eval(Container.DataItem, "checkedout" ) == "No"), ?"Check Out":""%> '<%# !String.IsNullOrEmpty(Convert.ToString(((System.Data.DataRowView)Container.DataItem)["RackRate"] ).Trim()) ? "£ "+((System.Data.DataRowView)Container.DataItem)["RackRate"]:"" %>' PopUpS ------ OnClientClick='<%# Eval("PropertyID", "Javascript:popupWin(\"Map.aspx?PID={0}\",500,400)") %>' OnClientClick='<%# Eval("PropertyID", "Javascript:window.open(\"Map.aspx?PID={0}\")") %>' OR onClientClick='<%#String.Format("{0}\"{1}{2}{3}{4}\")", "javascript:window.open(","Map.aspx?PID=",Eval("PropertyID"), "&Guid=",Eval("GUID")) %>' OnClientClick="popup(' <%# ((System.Data.DataRowView)Container.DataItem)["PropertyID"] %>');" OnClientClick='<%# Eval("PropertyID", "Javascript:window.open(\"Map.aspx?PropertyID={0}\")") %>' OnClientClick='<%# Eval('PropertyID', "Javascript:window.open('Map.aspx?PropertyID={0}','top=200,left=350,width=425,height=350, menubar=no,status=no,location=yes,toolbar=no,scrollbars=no')") %>' "window.open(<%# DataBinder.Eval(Container.DataItem,"PropertyID","'Map.aspx?PID={0}'") %>,'question','scrollbars=yes,width=630,height=480,location=no,menubar=no,status=no,toolbar=no');"
Thursday, July 23, 2009
Char to String to Byte Conversion
// C# to convert a string to a char array.
static public char[] convertStringToCharArray(string str)
{
return str.ToCharArray();
}
// C# to convert a string to a byte array.
static public byte[] convertStringToByteArray(string str)
{
byte[] arrByte = new byte[str.ToCharArray().Length];
int i = 0;
foreach (char ch in str.ToCharArray())
{
arrByte[i] = (byte)ch;
i++;
}
return arrByte;
}
// C# to convert a string to a byte array.
public static byte[] convertStringToByteArray1(string str)
{
//http://geekswithblogs.net/waynerds/archive/2006/01/16/66056.aspx
System.Text.ASCIIEncoding encoding = new System.Text.ASCIIEncoding();
return encoding.GetBytes(str);
}
// C# to convert a string to a byte array.
public static byte[] convertStringToByteArray2(string str)
{
//http://pankajkm.blogspot.com/2007/02/convert-string-to-byte-array-and-vice.html
return (new System.Text.UnicodeEncoding()).GetBytes(str);
}
// C# to convert a char array to a byte array.
static public byte[] convertCharArrayToByteArray(char[] ca)
{
byte[] arrByte = new byte[ca.Length];
int i = 0;
foreach (char ch in ca)
{
arrByte[i] = (byte)ch;
i++;
}
return arrByte;
}
// C# to convert a char array to a string.
static public string convertCharArrayToString(char[] ca)
{
string str;
str = ca.ToString(); //Or
str = new string(ca);
return str;
}
// C# to convert a byte array to a char array.
static public char[] convertByteArrayToCharArray(byte[] by)
{
//byte[] by = { 0x01, 0x02, 0x03 };
char[] chararray = new char[by.Length];
Array.Copy(by, chararray, by.Length);
return chararray;
}
// C# Convert a byte array to a string
public static string ConvertByteArrayToString(byte[] byteArray)
{
//http://geekswithblogs.net/waynerds/archive/2006/01/16/66056.aspx
byte[] dBytes = byteArray;
System.Text.ASCIIEncoding enc = new System.Text.ASCIIEncoding();
string str = enc.GetString(dBytes);
return str;
}
// C# Convert a byte array to a string
public static string ConvertByteArrayToString1(byte[] byteArray)
{
//http://pankajkm.blogspot.com/2007/02/convert-string-to-byte-array-and-vice.html
return (new System.Text.UnicodeEncoding()).GetString(byteArray);
}
// C# Convert a byte array to a string
public static string ConvertByteArrayToString2()
{
System.Net.WebClient webdata = new System.Net.WebClient();
const string sampleurl = "http://www.sampleurl.com/default.htm";
//the below statement assigns byte[]
byte[] byteArray = webdata.DownloadData(sampleurl);
//the below code converts byte[] type string type
string txt = System.Text.Encoding.GetEncoding("utf-8").GetString(byteArray);
return txt;
}
Monday, July 13, 2009
Friday, July 10, 2009
http to https conversion
protected void Page_Init(object sender, EventArgs e) { string fileName = System.IO.Path.GetFileName(HttpContext.Current.Request.FilePath); //File name that you want to give Scheme Http to Https if (fileName == "Register.aspx" || fileName == "MyAccount.aspx") { HttpToHttpsConvertor(HttpContext.Current.Request.Url, true); } else if (System.IO.Path.GetExtension(HttpContext.Current.Request.Path) == ".aspx") { //Remove Scheme Https to Http HttpToHttpsConvertor(HttpContext.Current.Request.Url, false); } } protected static void HttpToHttpsConvertor(Uri uri, Boolean isHttps) { UriBuilder secureUriBuilder = new UriBuilder(uri); if (isHttps) { if (!HttpContext.Current.Request.IsLocal) { if (secureUriBuilder.Scheme == Uri.UriSchemeHttp) { secureUriBuilder.Scheme = Uri.UriSchemeHttps; HttpContext.Current.Response.Status = "301 Moved Permanently"; secureUriBuilder.Port = 443; HttpContext.Current.Response.AddHeader("Location", secureUriBuilder.ToString()); HttpContext.Current.Response.Redirect(secureUriBuilder.ToString()); } } } else { if (!HttpContext.Current.Request.IsLocal) { if (secureUriBuilder.Scheme == Uri.UriSchemeHttps) { secureUriBuilder.Scheme = Uri.UriSchemeHttp; secureUriBuilder.Port = 80; HttpContext.Current.Response.AddHeader("Location", secureUriBuilder.ToString()); HttpContext.Current.Response.Redirect(secureUriBuilder.ToString()); } } } }
Error 1
Data Transfer Interrupted
The connection to www.XXXXX.com:80 was interrupted while the page was loading.
- Are you unable to browse other sites? Check the computer's network connection.
- Still having trouble? Consult your network administrator or Internet provider for assistance.
Rectification:
Godaddy will provide a port address for SSL.
secureUriBuilder.Port = 443;
Note:
We can get all the status code http://status-code.com/
Error 2
Location: http://www.XXXXX.com:443/Home.aspx
Line Number 1, Column 1:
^
Rectification:
Check whether you gave another port address for unsecure form like this.
secureUriBuilder.Port = 80;
Monday, July 6, 2009
Check whether we are in local machine or in Server
if (!httpContext.Request.IsLocal)
{
//If false then we are in server
}
Saturday, July 4, 2009
IE6 prompts to remember password
1. Navigate to Internet Explorer -> Tools menu -> Internet Options ->
Content tab | Personal Information section | AutoComplete button.
2. Under "Use AutoComplete for", de-select the 'User names and passwords on
forms' checkbox.
3. Click Ok to apply the setting.
The following method will clear the credentials already cached in Windows
XP joins a workgroup:
1. Open Control Panel and go into User Accounts.
2. Select the account and then choose "Manage my network passwords".
3. A "Store User Names and Passwords" dialog will appear.
4. Click Remove button to clear any passwords (for the affected sites.)
How to use the AutoComplete feature in Internet Explorer 5 and 6
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