How To Assign Bitmap To Imagecontrol
Jan 7, 2010i am trying to bind image to image control . but image is bitmap data. how can i?
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My question is: The code below works (I provide it here for those who might need it - simply add the code below to codebehind and this code in your aspx page <asp:ImageButton
ID="cpRubrik"
runat="server"
ImageUrl="~/img/colorpicker.png"
/> ;
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Protected Sub cpRubrik_Click(ByVal sender As Object, ByVal e As System.Web.UI.ImageClickEventArgs) Handles cpRubrik.Click
tbUtseenderub.ForeColor = BytFarg(e.X, e.Y)
End Sub
Protected Function BytFarg(ByVal x As Integer, ByVal y As Integer) As Color
Dim myBitmap As New Bitmap(Server.MapPath("~/img/colorpicker.bmp"))
Dim clr As Color = myBitmap.GetPixel(x, y)
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End Function
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private Bitmap GetImageForTime(DateTime time)
{
Bitmap bitmap = new Bitmap();
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}
want to call this method when the HTML is being generated. However, I do NOT want to write the image on the server. Instead, I would like to figure out a way to write it out along with the HTML. In a sense, I'm trying to accomplish the following:
protected void myLiteral_Load(object sender, EventArgs e)
{
string html = "<table><tr><td>";
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html += GetWeatherHtmlText();
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public static byte[] Draw(int width, int height)
{
MemoryStream memoryStream
= new MemoryStream();
Thread t = new Thread(delegate()
{
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{
Background = Brushes.Red,
BorderBrush = Brushes.Green,
CornerRadius = new System.Windows.CornerRadius(5),
Width = width,
Height = height
};
border.ApplyTemplate();
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new RenderTargetBitmap(width, height, 90, 90, PixelFormats.Pbgra32);
renderTargetBitmap.Render(border);
BitmapEncoder bitmapEncoder =
new PngBitmapEncoder();
bitmapEncoder.Frames.Add(BitmapFrame.Create(renderTargetBitmap));
bitmapEncoder.Save(memoryStream);
});
t.SetApartmentState(ApartmentState.STA);
t.Start();
bool success = t.Join(5000);
if (success)
return memoryStream.ToArray();
else
throw new Exception("Fail");
}
The result is quite bad, as I said the thing returns the image with the right width and height, but it's empty, so I guess I don't mess the thing up with the threading bit.
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[Code]....
below is the condition i want, when i click the button Analyze, the image (graph) is showed under the button with the header and template:
[Code]....
my current condition is when i click the button analyze, it will totaly display the graph only without the header and template as print screen below: how to change the coding to let the template and heaser showed together with the bar chart?
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Mar 22, 2011This in in an ASP.NET application.
Locally, this code runs fine, but on our production server, it throws an exception of 'Parameter is not valid' when Bitmap.Save() is called.
Should I not be using System.Drawing.Bitmap because its not recommened based on this:
[URL]
Classes within the System.Drawing namespace are not supported for use within a Windows or ASP.NET service. Attempting to use these classes from within one of these application types may produce unexpected problems, such as diminished service performance and run-time exceptions.
What else could I use?
Bitmap myBitmap = new Bitmap(img);
myBitmap.SetResolution(img.HorizontalResolution, img.VerticalResolution);
// get the tiff codec info
ImageCodecInfo myImageCodecInfo = GetEncoderInfo("image/tiff");
// Create an Encoder object based on the GUID for the Compression parameter category
System.Drawing.Imaging.Encoder myEncoder = System.Drawing.Imaging.Encoder.Compression;
// create encode parameters
EncoderParameters myEncoderParameters = new EncoderParameters(1);
EncoderParameter myEncoderParameter = new EncoderParameter(myEncoder, (long)EncoderValue.CompressionCCITT4);
myEncoderParameters.Param[0] = myEncoderParameter;
// save as a tiff
myBitmap.Save(input, myImageCodecInfo, myEncoderParameters);
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Apr 2, 2011I m facing one problem which is related to Bitmap Image Actually My image is saved properly without iis server but when i run application on iis server then its give Exception "A generic error occurred in GDI+."
I m using this code-
Byte[] bytes = (Byte[])ds.Tables[0].Rows[r][1];
MemoryStream memStream = new MemoryStream();
memStream.Write(bytes, 0, bytes.Length);
System.Drawing.Bitmap origBMP = new System.Drawing.Bitmap(memStream);
System.Drawing.Bitmap newBMP = new System.Drawing.Bitmap(origBMP, 100, 150);
System.Drawing.Graphics objGra = System.Drawing.Graphics.FromImage(newBMP);
objGra.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
objGra.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
origBMP.Dispose();
newBMP.Save(Server.MapPath("ImageUpload\" + r + ".Jpeg"), System.Drawing.Imaging.ImageFormat.Jpeg); //exception throw "A generic error occurred in GDI+."
newBMP.Dispose();
objGra.Dispose();
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Also I don't want to store the image in any location and i'm not supposed to use any session variable to pass it to generic handler.
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View 3 RepliesWeb Forms :: Use System.Drawing.Bitmap Class Into Other Class?
Oct 5, 2010How can I to use System.Drawing.Bitmap class into athoer class?
using System.Data;
using System.Collections;
using System.Globalization;
using System.Data.SqlClient;
using System.Collections.Generic;
using System.Globalization;
using System.Text;
namespace University
{
public class Class1
{
System.Drawing.Bitmap BMP=new System.Drawing .Bitmap();
}
}
when I use System.Drawing.Bitmap gives error this class does not exists
