asked on

Response.Flush();

why when i run or step trough this code, the html added to the page does not show at the moment of Thread.Sleep? thank you.

            placeholder.Controls.Clear();

                  string HTML = "";
                  HTML = "<table><tr><td>test</td></tr></table>";

                  Control objControl = this.Page.ParseControl(HTML);
                  this.placeholder.Controls.Add(objControl);

                  //Response.Clear();
                  Response.Buffer= true;
                  Response.Flush();
                  this.placeholder.Visible = true;
                  Thread.Sleep(15000);

ASKER CERTIFIED SOLUTION

monosodiumg

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alain123

ASKER

hello, i'm doing this after InOnit() ... before pre-render.. i tried to change the this.placeholder.Visible = true; before flush(), but nothing.. still the same form..

monosodiumg

Then you are nto going to see any HTML in the output because none has been generated. yet.
Why are you flushing in OnInit? At that stage you have pretty much nothing to flush.

alain123

ASKER

no I'm not flushing inside OnInit().. but After.. I'm flushing inside a Button_Onclick() event that it's called after OnInit()... and

"Then you are nto going to see any HTML in the output because none has been generated. yet" ..I'm adding the html to the control .. i think it should be there, unless i'm not doind some kind of refreshing..

HTML = "<table><tr><td>test</td></tr></table>";

Control objControl = this.Page.ParseControl(HTML);
this.placeholder.Controls.Add(objControl);

monosodiumg

Sorry alain, I've had very littel exposure to the finer points of using controls so I can't help.

alain123

ASKER

Thank you mon, for your help, i appreaciate it.

ptmcomp

Before the render method no html will be written to the output stream therefore Response.Flush() does not change anything. Response.Buffer should be changed in the beginning of the pages lifecycle so that either all contents or nothing is buffered.

ptmcomp

Place this code in OnPreRender:

placeholder.Controls.Clear();

string HTML = "";
HTML = "<table><tr><td>test</td></tr></table>";

Control objControl = this.Page.ParseControl(HTML);
this.placeholder.Controls.Add(objControl);
Response.Buffer= true;

Place this code in the overriden Render method:

this.placeholder.Visible = true;
Response.Flush();
Thread.Sleep(15000);

SOLUTION

ptmcomp

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AdrianJMartin

this works and you see the page 'filling up", it seams the Reponse object does not recognise the setting of Buffer to true until it has flushed the response automatically, I just pushed 300 spaces onto the stream as a test and it works.

            private void Button1_Click(object sender, System.EventArgs e)
            {
                  Response.Buffer= true;

//                  Response.Write( "0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789<br>" );
                  Response.Write( " " );
                  Response.Write( " " );
                  Response.Write( " " );

                  Response.Flush();

                  Response.Write("test2");
                  for( int i = 0 ; i < 100 ; i ++ )
                  {

                        Response.Write( string.Format("Message {0}<br>" , i ) ) ;
                        Response.Flush();
                        System.Threading.Thread.Sleep(100);
                  }
            }