private void CreatThumbnail(Image thumbNailImg, int iPagesCount)
{
try
{
//TRK
//PictureBox[] picBoxArray = new PictureBox[iPagesCount];
picBoxArray = new PictureBox[iPagesCount];
PictureBox picBox = null;
pnlThumbnail.Controls.Clear();
int iWidth = 300;
int iHeight = 300;
if (!rbShowPageByPage.Checked && !rbShowBoth.Checked)
{
//TRK - 01
iWidth = 308;
iHeight = 550;
pnlThumbnail.Size = new Size(966, 560);
//iWidth = 500;
//iHeight = 550;
//pnlThumbnail.Size = new Size(966, 560);
}
else
{
pnlThumbnail.Location = new Point(16, 110);
pnlThumbnail.Size = new Size(966, 131);
}
int iThumbCurrPage = 0;
for (; iThumbCurrPage < iPagesCount; iThumbCurrPage++)
{
//TRK
picBox = new PictureBox();
thumbNailImg.SelectActiveFrame(System.Drawing.Imaging.FrameDimension.Page, iThumbCurrPage);
using (Image myBmp = new Bitmap(thumbNailImg, iWidth, iHeight))
{
MemoryStream memoryStream = new MemoryStream();
myBmp.Save(memoryStream, System.Drawing.Imaging.ImageFormat.Tiff);
picBox.Image = Image.FromStream(memoryStream); // showing the page in the pictureBox1
myBmp.Dispose();
if (memoryStream != null)
{
memoryStream.Close();
memoryStream.Dispose();
}
GC.Collect();
}
picBox.Size = picBox.Image.Size;
picBox.Location = new Point(1 + (iThumbCurrPage * (iWidth + 10)), 1);
picBoxArray[iThumbCurrPage] = picBox;
picBoxArray[iThumbCurrPage].Name = Convert.ToString(iThumbCurrPage);
toolTipForControls.SetToolTip(picBoxArray[iThumbCurrPage], MessagesAndToolTips.ThumNailClick);
picBoxArray[iThumbCurrPage].Click += new System.EventHandler(this.ThumbNailPictureBox_Click);
pnlThumbnail.Controls.Add(picBoxArray[iThumbCurrPage]);
if (iThumbCurrPage == 0)
objCommonDeclarations.ShowMessage("Loading Page " + Convert.ToString(iThumbCurrPage + 1) + " Of " + Convert.ToString(iPagesCount), "INFO", lblShowMessage);
else
objCommonDeclarations.ShowMessage("Loading Next Page " + Convert.ToString(iThumbCurrPage + 1) + " Of " + Convert.ToString(iPagesCount), "INFO", lblShowMessage);
Application.DoEvents();
GC.Collect();
}
objCommonDeclarations.ShowMessage("Loading Last " + Convert.ToString(iThumbCurrPage) + " Of " + Convert.ToString(iPagesCount), "INFO", lblShowMessage);
Application.DoEvents();
objCommonDeclarations.ShowMessage(string.Empty, "INFO", lblShowMessage);
Application.DoEvents();
}
catch (Exception ex)
{
objCommonDeclarations.ShowMessage(ex.Message.ToString(), "ERROR", lblShowMessage);
objCommonDeclarations.WriteLog(ex.Message.ToString(), false, false);
}
}
private void SwapImages()
{
try
{
int swapPage = Convert.ToInt32(txtPageNumber.Text.Trim()) - 1;
//Open file in read only mode
using (FileStream fs = new FileStream(@lblFile.Text.Trim(), FileMode.Open, FileAccess.Read))
{
string _sDestinatinPath = Path.Combine(CommonDeclarations.sDestinationPath, Path.GetFileName(@lblFile.Text.Trim()));
if (swapPage == 0)
{
using (Image bmp1 = Image.FromStream(fs))//TRK
{
bmp1.Save(_sDestinatinPath, ImageFormat.Tiff);
fs.Dispose();
bmp1.Dispose();
GC.Collect();
}
return;
//background
//return string.Empty;
}
ImageCodecInfo imageCodecInfo = GetEncoderInfo("image/tiff");
//Image bmp = Image.FromStream(fs);
using (Image bmp = Image.FromStream(fs))//TRK
{
//Bitmap bmp = new Bitmap(fs);
int frameCount = bmp.GetFrameCount(FrameDimension.Page);
bmp.SelectActiveFrame(System.Drawing.Imaging.FrameDimension.Page, swapPage);
//Image newTiff = new Bitmap(bmp, bmp.Width, bmp.Height);
//Image newTiff = Converter.ConvertToBitonal(new Bitmap(bmp, bmp.Width, bmp.Height));
using (Image newTiff = Converter.ConvertToBitonal(new Bitmap(bmp, bmp.Width, bmp.Height)))
{
EncoderParameters SaveEncoderParameters = new EncoderParameters(2);
System.Drawing.Imaging.Encoder SaveEncoder = System.Drawing.Imaging.Encoder.SaveFlag;
EncoderParameter CompressEncodeParam = new EncoderParameter(SaveEncoder, (long)(EncoderValue.MultiFrame));
SaveEncoderParameters.Param[0] = CompressEncodeParam;
SaveEncoder = System.Drawing.Imaging.Encoder.Compression;
CompressEncodeParam = new EncoderParameter(SaveEncoder, (long)(EncoderValue.CompressionCCITT4));
SaveEncoderParameters.Param[1] = CompressEncodeParam;
System.Drawing.Imaging.Encoder AddEncoder = System.Drawing.Imaging.Encoder.SaveFlag;
EncoderParameter AddEncodeParam = new EncoderParameter(AddEncoder, (long)EncoderValue.FrameDimensionPage);
System.Drawing.Imaging.Encoder AddCompressionEncoder = System.Drawing.Imaging.Encoder.Compression;
EncoderParameter AddCompressionEncodeParam = new EncoderParameter(AddCompressionEncoder, (long)EncoderValue.CompressionCCITT4);
EncoderParameters AddEncoderParams = new EncoderParameters(2);
AddEncoderParams.Param[0] = AddEncodeParam;
AddEncoderParams.Param[1] = AddCompressionEncodeParam;
ArrayList swap = new ArrayList();
for (int i = 0; i < frameCount; i++)
{
swap.Add(i);
}
swap.Insert(0, swap[swapPage]);
swap.RemoveAt(swapPage + 1);
int pageCount = 0;
for (; pageCount < frameCount; pageCount++)
{
switch (pageCount)
{
case 0:
newTiff.Save(_sDestinatinPath, imageCodecInfo, SaveEncoderParameters);
break;
default:
bmp.SelectActiveFrame(System.Drawing.Imaging.FrameDimension.Page, Convert.ToInt32(swap[pageCount]));
try
{
// Convert image to bitonal for saving to file
using (Bitmap newPage = Converter.ConvertToBitonal(new Bitmap(bmp, bmp.Width, bmp.Height)))//TRK
{
newTiff.SaveAdd(newPage, AddEncoderParams);
newPage.Dispose();
GC.Collect();
}
}
catch (Exception ex)
{
throw ex;
}
finally
{
//GC.WaitForPendingFinalizers();
}
break;
}
////Background
//objCommonDeclarations.ShowMessage("Reordering Images " + Convert.ToString(pageCount + 1) + " of " + Convert.ToString(frameCount), "INFO", lblShowMessage);
//Application.DoEvents();
GC.Collect();
//GC.WaitForPendingFinalizers();
}
//////Background
//objCommonDeclarations.ShowMessage("Reordering Images " + Convert.ToString(pageCount + 1) + " of " + Convert.ToString(frameCount), "INFO", lblShowMessage);
//Application.DoEvents();
//////Background
//objCommonDeclarations.ShowMessage(string.Empty, "INFO", lblShowMessage);
//Application.DoEvents();
AddEncoderParams.Param[0] = new EncoderParameter(AddEncoder, (long)EncoderValue.Flush);
newTiff.SaveAdd(AddEncoderParams);
newTiff.Dispose();
GC.Collect();
}
bmp.Dispose();
fs.Dispose();
GC.Collect();
}
}
}
catch (Exception ex)
{
objCommonDeclarations.ShowMessage(ex.Message.ToString(), "ERROR", lblShowMessage);
//Background
//return ex.Message.ToString();
objCommonDeclarations.WriteLog(ex.Message.ToString(), false, false);
}
//Background
//return string.Empty;
}
///
/// To Merge the Single Page Tifs in folder to a Multipage Tiff Image
///
/// This denotes Multipage Image Full Path/// This denotes Single Page Tif Image List/// After Merge where need to store the New Merged Tif Filesprivate bool MergeTifImages(String sMultiPageTif, List lstSingleTifs, String sDestinationPath)
{
String SinglePageTif = String.Empty;
bool sflg = true;
try
{
// To Check Destination Path is Exist or Not, if not create the path and folder structure
if (!Directory.Exists(@sDestinationPath)) Directory.CreateDirectory(@sDestinationPath);
//Open file in read only mode
using (FileStream fs = new FileStream(@sMultiPageTif, FileMode.Open, FileAccess.Read))
{
//To Form the Destination Tiff File Name
String _sDestinatinPath = Path.Combine(@sDestinationPath, Path.GetFileName(@sMultiPageTif));
//To Create the Image Codec Info
ImageCodecInfo imageCodecInfo = GetEncoderInfo("image/tiff");
//To Create the New bmp Image from the existing Multipage Tif
//Image bmp = Image.FromStream(fs);
Image newTiff = null;
//To Select the Encoder and Compresstion formates for the Tif Images
EncoderParameters SaveEncoderParameters = new EncoderParameters(2);
System.Drawing.Imaging.Encoder SaveEncoder = System.Drawing.Imaging.Encoder.SaveFlag;
EncoderParameter CompressEncodeParam = new EncoderParameter(SaveEncoder, (long)(EncoderValue.MultiFrame));
SaveEncoderParameters.Param[0] = CompressEncodeParam;
SaveEncoder = System.Drawing.Imaging.Encoder.Compression;
CompressEncodeParam = new EncoderParameter(SaveEncoder, (long)(EncoderValue.CompressionCCITT4));
SaveEncoderParameters.Param[1] = CompressEncodeParam;
System.Drawing.Imaging.Encoder AddEncoder = System.Drawing.Imaging.Encoder.SaveFlag;
EncoderParameter AddEncodeParam = new EncoderParameter(AddEncoder, (long)EncoderValue.FrameDimensionPage);
System.Drawing.Imaging.Encoder AddCompressionEncoder = System.Drawing.Imaging.Encoder.Compression;
EncoderParameter AddCompressionEncodeParam = new EncoderParameter(AddCompressionEncoder, (long)EncoderValue.CompressionCCITT4);
EncoderParameters AddEncoderParams = new EncoderParameters(2);
AddEncoderParams.Param[0] = AddEncodeParam;
AddEncoderParams.Param[1] = AddCompressionEncodeParam;
using (Image bmp = Image.FromStream(fs))
{
//Get the Page Count, i.e Frame Count
int frameCount = bmp.GetFrameCount(FrameDimension.Page);
//To Create Temp New Tiff
newTiff = Converter.ConvertToBitonal(new Bitmap(bmp, bmp.Width, bmp.Height));
// To Save the Multipage Tiff
newTiff.Save(_sDestinatinPath, imageCodecInfo, SaveEncoderParameters);
Application.DoEvents();
//To Update frame by frame to the multipage
int pageCount = 0;
for (; pageCount < frameCount; pageCount++)
{
switch (pageCount)
{
case 0:
newTiff.Save(_sDestinatinPath, imageCodecInfo, SaveEncoderParameters);
break;
default:
bmp.SelectActiveFrame(System.Drawing.Imaging.FrameDimension.Page, pageCount);
// Convert image to bitonal for saving to file
using (Bitmap newPage = Converter.ConvertToBitonal(new Bitmap(bmp, bmp.Width, bmp.Height)))
{
//Bitmap newPage = Converter.ConvertToBitonal(new Bitmap(bmp, bmp.Width, bmp.Height));
newTiff.SaveAdd(newPage, AddEncoderParams);
}
break;
}
Application.DoEvents();
}
}
// To Merage the Single Page Tif Image to Multipage Tif Image form Single Tifs List
foreach (String SingleTif in lstSingleTifs)
{
try
{
CommonDeclarations.WriteLog("Single Page TIF: " + Path.GetFileName(SingleTif), false, false);
using (FileStream fs1 = new FileStream(@SingleTif, FileMode.Open, FileAccess.Read))
{
//To over come Out of memory.
//Image Singlebmp = Image.FromStream(fs1);
using (Image Singlebmp = Image.FromStream(fs1))
{
Application.DoEvents();
int frameCount = Singlebmp.GetFrameCount(FrameDimension.Page);
//To Check the Given Single Page tif is having More than One Frame
if (frameCount > 1)
{
CommonDeclarations.WriteLog("The Selected Single Page TIF Having More Then One Page. Page Count: " + frameCount, false, false);
//This works if Multipage exist
int pageCount = 0;
for (; pageCount < frameCount; pageCount++)
{
Singlebmp.SelectActiveFrame(System.Drawing.Imaging.FrameDimension.Page, pageCount);
// Convert image to bitonal for saving to file
Bitmap SinglePageTiff = Converter.ConvertToBitonal(new Bitmap(Singlebmp, Singlebmp.Width, Singlebmp.Height));
newTiff.SaveAdd(SinglePageTiff, AddEncoderParams);
// break;
}
}
else
{
//This will works while Single Frame of Single Tiff Image
using (Bitmap tempBmp = new Bitmap(Singlebmp, Singlebmp.Width, Singlebmp.Height))
{
using (Bitmap SinglePageTifs = Converter.ConvertToBitonal(tempBmp))
{
//Bitmap SinglePageTifs = Converter.ConvertToBitonal(new Bitmap(Singlebmp, Singlebmp.Width, Singlebmp.Height));
Application.DoEvents();
newTiff.SaveAdd(SinglePageTifs, AddEncoderParams);
SinglePageTifs.Dispose();
GC.Collect();
}
tempBmp.Dispose();
GC.Collect();
}
}
Singlebmp.Dispose();
GC.Collect();
}
fs1.Close();
fs1.Dispose();
GC.Collect();
}
}
catch (Exception ex)
{
CommonDeclarations.WriteLog(ex.Message.ToString(), false, false);
sflg = false;
}
}
//Save the New Tiff and Encode the Tiff Images
AddEncoderParams.Param[0] = new EncoderParameter(AddEncoder, (long)EncoderValue.Flush);
newTiff.SaveAdd(AddEncoderParams);
newTiff.Dispose();
GC.Collect();
}
}
catch (Exception ex)
{
//CommonDeclarations.ShowMessage(ex.Message.ToString(), "ERROR", lblShowMessage);
CommonDeclarations.WriteLog("Some Error in MergeTifImages, Error: " + ex.Message.ToString(), false, false);
sflg = false;
}
return sflg;
}
///
/// To Get the ImageCodecInfo. For Example *.TIF,*.TIFF or *.JPG,*.BMP,*.GIF
///
/// This denotes MimeType. Kind of Imgage to Get the Image Files Type///
After running the application I looked how much memory the Proces use. Object.Dispose(); doesn't release the memory occuped by the object immediately. It shows constant memory increase when seeing.
After using GC.Collect(); if frees the memory. Afterwares no OutOfMemory Exception thrown.
Here we added each image to a panel(pnlThumbnail)
pnlThumbnail.Controls.Add(picBoxArray[iThumbCurrPage]); This occupies more memory. We have to clear that in the following way.
//Clear the picture box stored in thumbnailArray
if (picBoxArray != null)
{
foreach (PictureBox tempPb in picBoxArray)
{
if (tempPb.Image != null)
{
tempPb.Image.Dispose();
tempPb.Image = null;
GC.Collect();
}
}
picBoxArray = null;
}
for (int clearPictureBox = 0; clearPictureBox < pnlThumbnail.Controls.Count; clearPictureBox++)
{
PictureBox pb = pnlThumbnail.Controls[clearPictureBox] as PictureBox;
pnlThumbnail.Controls.Remove(pb);
if (pb.Image != null)
{
pb.Image.Dispose();
pb.Image = null;
}
}
if (pbShowTiffImage.Image != null)
{
pbShowTiffImage.Image = null;
pbShowTiffImage.Invalidate();
GC.Collect();
}
//The above one is better than this
//foreach (IDisposable control in pnlThumbnail.Controls)
// control.Dispose();
pnlThumbnail.Controls.Clear();
GC.Collect();
REferences
Tracking down managed memory leaks (how to find a GC leak)
IDisposable.Dispose Method
Detecting .NET application memory leaks
memory leak with delegates and workflow foundation
http://msdn.microsoft.com/en-us/magazine/cc163491.aspx
Memory Leak Detection in .NET
string isEmpty = string.Empty; DateTime dt = isEmpty == string.Empty ? BNull.Value : DateTime.Now;Error
string isEmpty = string.Empty; DateTime dt = Convert.ToDateTime(isEmpty == string.Empty ? (object)DBNull.Value : (object)DateTime.Now);
namespace StructTest
{
public struct Student
{
int id;
int zipcode;
double salary;
}
}
Failed to load viewstate.
match the control tree that was used to save viewstate
during the previous request. For example, when adding
controls dynamically, the controls added during a
post-back must match the type and position of the
controls added during the initial request.
This occurs in when press the command field(Edit button)
in the gridview.
To solve we have to bind the GridView once again.
protected void GridView1_RowEditing(object sender,
System.Web.UI.WebControls.GridViewEditEventArgs e)
{
GridView1.EditIndex = e.NewEditIndex;
BindGrid();
}
Server Error in '/BabuTest' Application.
Configuration Error
Description: An error occurred during the processing of a configuration file required to service this request.
Please review the specific error details below and modify your configuration file appropriately.
Parser Error Message: The entry 'SiteSqlServer' has already been added.
Source Error:
Line 24: <!-- Connection String for SQL Server 2000/2005-->
Line 25: <add name="ConnectionString" connectionString="Server=(local);
Database=babu
uid=sa;pwd=sa12345678;" providerName="System.Data.SqlClient"/>
Line 26: </connectionStrings>
Line 27: <appSettings>
Source File: c:\inetpub\wwwroot\dnntest\web.config Line: 25Version Information: Microsoft .NET Framework Version:2.0.50727.42; ASP.NET Version:2.0.50727.42
This is the config error i get. Has anyone experienced this problem?
// Moderator edit to reduce scroll
How to solve the Issue
The common cause for the error is the connecting string name
name="ConnectionString" already is present in
the machine.config file.
It is default in the machine.config file.
The best way of giving the name of the connection string is
project Name + ConnString
Or if the problem still exists.
<connectionstrings>
<clear>
<!-- OR -->
<remove name="SiteSqlServer">
<add name="SiteSqlServer" connectionstring="..."
providername="System.Data.SqlClient"></add>
</connectionstrings>
