How To Write A Binary Image To A Database Using C# And A Custom Http Hander

Jan 30, 2011

The thinking behind the question is that my image current reads it's data from a custom httphandler that gets the image from the database. I want to be able to use a file upload control to "post" a replacement file back to a "write" handler, updating the database. Then I can refresh my image using javascript to the original "read" handler. Is this possible?

I currently have a standard postback model upload process which puts the image into the database and a custom handler to read it back. What I want to know, is can you create a custom http handler to perform the upload so I could asynchronously call the upload handler then refresh the image src to pull it back from the database. At the moment I am using the IFrame approach to make it appear asynchronous, I just want to know the best practice really

View 2 Replies


Similar Messages:

How To Get And Save/write File (.doc, .xls, Etc) In Database In Binary Format

Mar 4, 2010

Actually I want to get a file and save its length, its MIME type, content into database in binary format.

It saved but not open in hander in correct format.

[code]....

View 1 Replies

Custom Server Controls :: Writing Image Binary Data To The Response

Sep 21, 2010

I've created 2 web user controls. A = User control that displays an image, and B is the user control that hosts A. I'm trying to stream an array of bytes to A, but it seems like the Response.BinaryWrite method completely overwrites any heirachial controls (I can't see any of B's other controls besides the image).

How do I get A to just display the image from the byte stream? It doesn't come from a database, it's an image I created on the fly.

A's code:

[Code]....

View 6 Replies

Web Forms :: Display Binary Image From Database In ImageButton

Jan 30, 2014

Image is inserted in the table. The problem is i want to map the image to the image button. But the image button has imageurl property.. But the image is in the table ..How will I map to the image button . I have attached my code

if (dr.HasRows){chkrecord = 1; while (dr.Read()){TextBox1.Text = dr[0].ToString();
TextBox2.Text = dr[1].ToString();TextBox3.Text = dr[2].ToString();
TextBox8.Text = dr[3].ToString();TextBox9.Text = dr[4].ToString();
TextBox21.Text = dr[6].ToString();TextBox23.Text = dr[5].ToString();
imagebutton1.imageurl =????? 

How will I map to the image button since my image is in the table...

View 1 Replies

SQL Reporting :: Display Binary Database Image In RDLC Report?

Jun 4, 2010

I need to display a binary image from database in RDLC report in a table.

View 2 Replies

Web Forms :: Display Binary Image From Database In GridView Control

May 26, 2012

I have stored image into database as a binary format .. but when i run my webside ... browser show only text data into gridview .. not showing image ... although image is already saved into database. How can i solve it..(any property of grid view which show image) ....

View 1 Replies

Controls :: Display Binary Image From Database In Piczard Control

May 7, 2015

I want to load an image file (Converted in bytestream) from Database to Piczard Control.How to do perform this operation ??

View 1 Replies

Read Binary Column In Database Into Image On Asp Page - Code Doesn't Work?

Mar 11, 2010

I want to read from database where I've stored a image in binary field and display a image.

while (reader.Read())
{
byte[] imgarr = (byte[])reader["file"];
Stream s = new MemoryStream(imgarr);
System.Drawing.Image image = System.Drawing.Image.FromStream(s);
Graphics g = Graphics.FromImage(image);
g.DrawImage(image, new Point(400, 10));
image.Save(Response.OutputStream, ImageFormat.Jpeg);
g.Dispose();
image.Dispose();
}
con.Close();

This piece of code doesn't work:

System.Drawing.Image image = System.Drawing.Image.FromStream(s);

I tried the code from this article. And I got the same mistake " the parameter is not valid ". Maybe I'm not aware of something, some setting in sql server or webconfig or sth else. Anyone else who has experience from fetching images from database? The parameter is not valid is the error message. db table contains data. What am I doing wrong?

View 3 Replies

Data Controls :: How To Update Binary Image Files Stored In Database Using GridView

May 7, 2015

along with a gridview update file that I store in my database

View 1 Replies

Web Forms :: Embed Binary Image From Database In Message Body And Send Email

May 7, 2015

I have been trying to add BLOB Image from Oracle Database table to Email content as HTML table elemnt.

<table style='width: 100%; font-weight: bold;'>
<tr style="border-style: groove; font-size: 14px; font-weight: bold; background-color: #45a297;">
<td colspan="2" style="font-size: 8px; font-family: Verdana; font-weight: bold; padding-left: 0px; color: white; font-size: 16px; text-align: center">Flight</td>
</tr>

[CODE]..

I am getting my data in Email except Image in mail content.

View 1 Replies

Web Forms :: Display Binary Image Stored In SQL Server Database In DataList Control

Jul 5, 2012

I use these code to dispalying image from database. [URL]... I use these code for my data list

<asp:DataList ID="DataList1" runat="server" RepeatColumns="4"
RepeatDirection="Horizontal">
<ItemTemplate>
<table class="DDLh">

[code]....

For displaying image we should write this code

 <asp:image ToolTip = "ASP Image Control" ID="Image13" runat="server" ImageUrl ="~/imageH.aspx?ImageID=48" Height="156px" Width="174px"></asp:image>

now here in my data list what should i write instead of this code?untill it show my image from database?

<asp:image ID="img1" runat="server" CssClass="TPH" ImageUrl='<%#Eval("image","image/house/{0}")%>' BorderStyle="Solid" BorderWidth="1px" BorderColor="#c9c9c7" />

View 1 Replies

Forms Data Controls :: Displaying Binary Image Saved In A Database To Gridview ImageField?

Oct 25, 2010

I have a coloumn in a database table in which i am storing the candidates photo in a binary format.

now i have to show these photo in a gridview according to the candidates rollno. i am trying to use the imagefield of a gridview control to display the photo but it is not displaying the photo in a grid view

View 3 Replies

Possible To Convert Datatable Into Binary Data And Save It Into On Binary Field On Database

Sep 20, 2010

Is it possible to convert a datatable into binary data and save it into on a binary field on database?

View 2 Replies

C# - How To Write Binary Data "as Is" To Registry (ie: I Have Visible Binary Data As String From Regedit Only)

Feb 23, 2011

I have been googling this and have not come along a working solution for an entire day. I don't know anything about binary data types (as I've never knowingly used them) and I'm trying to write a binary value that I see in the registry, to the registry. Now, all I see is the following [shown below]... and if I try to pass that as a string to the RegSetValueEx in the WinAPI and of course it errors out... I do not know what 'numbers' I need to pass into the lpData As Any, argument of RegSetValueEx (i tried a bit array) in order for it to come out as the following [shown below] in the regedit. I really have no idea, and my tests to place random numbers in the bit array just produce corresponding random "figures" as visible in regedit that I do not understand how to 'tie' them together logically.

here is the culprit!

[Code]...

If I had the following in a string or a bit array, what must I populate the bitarray with so that the registry outputs this [above] when written? or, how can I figure out how to do it? I was hoping there'd be a function that reads my string of binary data and transforms it into the real binary format to submit to the RegSetValueEx function in VB6 or other function in VB.Net or C# (this really is a language agnostic question, and the problem exists in all languages; ie: same process).

View 2 Replies

Loading Image From Database Using Http-handler?

Feb 11, 2010

In my MSSQL Server I have a table named Nomogram including an attribute named Img1 which include an image of type varbinary(MAX)I wish to load that image on my webform using an http-handler (ashx).How do I do that? I have looked at this sample but I can figure it out how to solve my exact problem. [URL]

View 29 Replies

Access :: Read And Write Image To Database?

Aug 2, 2010

i need vb code how to read and write an image to access data base

how to read it from dataTable object and store it in my application as image object

View 2 Replies

HTTP Response And Request In Binary

Feb 21, 2010

I need to I can make the web request to a webservice which take a XML argument. And is expected to return a Binary response. I am able to make the request but while recieving the response back I am unable to get the response in binary. When I read the response
using streamreader see the header and some attached "HEBRISH" words probably binary but unable to sepreate it out. Please help in seprating out the binary the response data.

View 1 Replies

Data Controls :: Display Image From Binary Data In Database In Detailview Control?

May 12, 2012

I want to display image in detailview.. I used image datatype in the database instead of using varbinary. but the problem is.. detail view is not fetching the picture..

how i display the picture of datatype image.

View 1 Replies

Data Controls :: How To Get Binary Data (image) From Database

Nov 21, 2013

I am inserting images into the database and I want to access binary data (image) from the database and insert into the new table. How to do this...

View 1 Replies

Write Binary Data As A Response In MVC Web Control?

Apr 28, 2010

I am trying to get a control (not a controller -- a subclass of System.Web.UI.WebControls.WebControl), that can be used that I wrote for ASP.NET to work in an ASP.NET MVC environment. Normally, the control does the normal thing, and that works fine

Sometimes it needs to respond by clearing the response, writing an image to the response stream and changing the content type. When you do this, you get an exception "OutputStream is not available when a custom TextWriter is used".

If I were a page or controller, I see how I can create custom responses with binary data, but I can't see how to do this from inside a control's render functions. To simplify it -- imagine I want to make a web control that renders to:

<img src="pageThatControlIsOn?controlImage">

And I know how to look at incoming requests and recognize query strings that should be routed to the control. Now the control is supposed to respond with a generated image (content-type: image/png -- and the encoded image). In ASP.NET, we:

Response.Clear();
Response.OutputStream.Write(thePngData); // this throws in MVC
// set the content type, etc
Response.End();

How am I supposed to do that in an ASP.NET MVC control?

View 2 Replies

C# - Read And Write Binary Excel File Without Com Library?

Feb 26, 2010

I want to read and write excel file . it can do with oledb , there is a limitation maximunm characters < 255 solution is mono data type , now create table become second sheet (when open excel it is shown as hidden.)

View 2 Replies

SQL Server :: How To Insert An Image From The Image Folder Into A Binary Column

Sep 14, 2010

How would I go about inserting an image that's in my images folder into a sql table column of datatype varbinary(MAX) ?

View 5 Replies

Web Forms :: Update Binary Image In SQL Server Image Field

Nov 29, 2012

I am developing an application in which i have to store image in database SQL server2008. I want to use upload file control and only want to upload .jpg and JPEG file and view this image in image control . And when i want to update this record i can update that image too..

View 1 Replies

Trying To Write An HTTP GET Handler?

Mar 24, 2011

I'm trying to write an HTTP GET handler. The path should start with http://site/processTask and have a set of URL-encoded parameters. I have the following in my web.config

<httpHandlers>
<remove verb="*" path="*.asmx"/>
<add verb="*" path="*.asmx" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
<add verb="*" path="*_AppService.axd" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
<add verb="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" validate="false"/>
<add verb="GET" path="processTask*" type="MyHandler.ProcessTaskHandler, MyHandler"/>
</httpHandlers>

now when I type the URL http://mysite/processTask in browser I get HTTP 404 but if I change the add verb line to the following one:

<add verb="GET" path="processTask.asmx*" type="MyHandler.ProcessTaskHandler, MyHandler"/>
and type http://mysite/ProcessTask.asmx in browser the handler is run and I get the response from the handler. What's the problem? Why is the handler run only when the path contains .asmx? How do I change web.config so that .asmx is not required?

View 1 Replies

Custom Server Controls :: Why Custom Control Write Data Only One Time

Dec 26, 2010

I have built a custom control. when i add this custom control in my page twice or more then the it write only one time of its render contest data.

View 4 Replies







Copyrights 2005-15 www.BigResource.com, All rights reserved