read jpeg

[Alan]

Hello,
I am making a web page where I need to show somewhere in the page a webcam
without component like activex.
In my webcam I can read the last picture with the following command:
http://192.168.1.34/jpg/image.jpg
I have a img tag in my web page where I show the last picture. But I don't
want to refresh the web page all the time to show my webcam and for that I
made a javascript that read the picture:
function mycamera() {
document.getEle mentById('camer a').src = 'http://192.168.1.34/jpg/image.jpg';
timerID = setTimeout("cam era",1000);
}
But the behavior is not the same than when I refresh the page, because it
show me always the same picture, but if in another web page I read the webcam
picture (with a refresh of the page) in the first web page I have the new
picture.
I think the webcam generate a new picture with a http request, and I try to
do a function in the web server wich read cyclic the picture:
public void RefreshCamera(O bject source, System.Timers.E lapsedEventArgs e)
{
WebClient Client = new WebClient();
byte[] image =
Client.Download Data("http://192.168.1.34/jpg/image.jpg");
aTimer.Start();
}
but the webcam do not generate a new picture.

Thanks for your help.

[Bruce Barker]

the browser caches images. just decorate url with client: script:

var jid=0;
function mycamera() {
document.getEle mentById('camer a').src =
'http://192.168.1.34/jpg/image.jpg?jid=' + (jid++);
timerID = setTimeout("cam era",1000);
}

-- bruce (sqlwork.com)
"Alan" <Al**@discussio ns.microsoft.co m> wrote in message
news:CF******** *************** ***********@mic rosoft.com...

Hello,
I am making a web page where I need to show somewhere in the page a webcam
without component like activex.
In my webcam I can read the last picture with the following command:
http://192.168.1.34/jpg/image.jpg
I have a img tag in my web page where I show the last picture. But I don't
want to refresh the web page all the time to show my webcam and for that I
made a javascript that read the picture:
function mycamera() {
document.getEle mentById('camer a').src =
'http://192.168.1.34/jpg/image.jpg';
timerID = setTimeout("cam era",1000);
}
But the behavior is not the same than when I refresh the page, because it
show me always the same picture, but if in another web page I read the
webcam
picture (with a refresh of the page) in the first web page I have the new
picture.
I think the webcam generate a new picture with a http request, and I try
to
do a function in the web server wich read cyclic the picture:
public void RefreshCamera(O bject source, System.Timers.E lapsedEventArgs
e)
{
WebClient Client = new WebClient();
byte[] image =
Client.Download Data("http://192.168.1.34/jpg/image.jpg");
aTimer.Start();
}
but the webcam do not generate a new picture.

Thanks for your help.

[Alan]

Thank, your solution work properly.
But there is alway the message "Downloadin g picture http://...... and the
mouse with the sand glass, is there a method to hide this message.

"Bruce Barker" wrote:

the browser caches images. just decorate url with client: script:

var jid=0;
function mycamera() {
document.getEle mentById('camer a').src =
'http://192.168.1.34/jpg/image.jpg?jid=' + (jid++);
timerID = setTimeout("cam era",1000);
}

-- bruce (sqlwork.com)
"Alan" <Al**@discussio ns.microsoft.co m> wrote in message
news:CF******** *************** ***********@mic rosoft.com...

Hello,
I am making a web page where I need to show somewhere in the page a webcam
without component like activex.
In my webcam I can read the last picture with the following command:
http://192.168.1.34/jpg/image.jpg
I have a img tag in my web page where I show the last picture. But I don't
want to refresh the web page all the time to show my webcam and for that I
made a javascript that read the picture:
function mycamera() {
document.getEle mentById('camer a').src =
'http://192.168.1.34/jpg/image.jpg';
timerID = setTimeout("cam era",1000);
}
But the behavior is not the same than when I refresh the page, because it
show me always the same picture, but if in another web page I read the
webcam
picture (with a refresh of the page) in the first web page I have the new
picture.
I think the webcam generate a new picture with a http request, and I try
to
do a function in the web server wich read cyclic the picture:
public void RefreshCamera(O bject source, System.Timers.E lapsedEventArgs
e)
{
WebClient Client = new WebClient();
byte[] image =
Client.Download Data("http://192.168.1.34/jpg/image.jpg");
aTimer.Start();
}
but the webcam do not generate a new picture.

Thanks for your help.