Customers have an ASP.NET DATAGRID control with a scroll bar, I have to write:
Using system;
Using system.Web.ui;
Using system.Web.ui.webcontrols;
Using system.componentmodel;
Using system.diagnostics;
Using system.io;
Using system.Web.ui.design.webcontrols;
Using system.text;
Using system.drawing;
[Assembly: tagprefix ("Microsoft.gtec.dsv", "gtecdsv")]
Namespace Microsoft.gtec.dsv
{
///
/// Summary Description for WebcustomControl1.
///
[ToolboxData ("<{0}: scrollablefixedheaderdatagrid runat = server> ")]
Public Class ScrollablefixedHeaderDataGrid: System.Web.ui.WebControls.DataGrid
{
Protected Override Void Render (HTMLTextWriter Output)
{
// Use this flag to determine WHETHER The Component is in design-time or runtime.
// The Control Will Be Rendered Differently In Ide.
// Don't Bother To Use DataGridDesigner.getdesigntimehtml
Bool DesignMode = ((Site! = null) && (site.designmode));
// BACKING UP THE Properties Need To change During the render process
String Templeft = style ["left"];
String Temptop = Style ["TOP"];
Unit Tempheight = Height;
String TemptableStyle = Style ["Table-Layout"];
// Render a "
Output.writebegintag ("DIV");
Output.writeAttribute ("ID", ID "_div");
Output.writeAttribute ("style",
Height: " Height "; "
// Leave 20px for the Vertical Scroll Bar,
// Assuming the end-user will not set his scroll bar to more Than 20px.
"Width:" (width.value 20) "PX;"
"TOP:" style ["TOP"] ";" "Left:" Style ["Left"] ";"
"Position:" Style ["position"] ";"
"OVERFLOW-X: Auto;"
"Z-index:" style ["z-index"] ";"
// Render The Scrollbar Differently for Design-Time and Runtime.
"OVERFLOW-Y:" (DesignMode? "Scroll": "auto")
);
Output.write (htmltextwriter.tagrightchar);
// The datagrid is inside the "
Style ["Left"] = "0px";
Style [TOP "] =" 0px ";
// render the datagrid.
Base.Render (Output);
Output.writeEndtag ("DIV");
// Restore the VALUES
STYLE ["Left"] = Templeft;
STYLE ["TOP"] = Temptop;
// The folload rendering is Only Necessary Under Runtime. It has NEGATIVE IMPACT DURING DESIGN TIME.
IF (! designmode)
{
// Render Another Copy of The DataGrid with Only Headers.
// Render It After the DataGrid with contents,
// SO That it is on the top. z-index is more intrlex here.
// set height to 0, SO That IT Will Adjust On ITS OWN.
Height = New Unit ("0px");
StringWriter SW = new stringwriter ();
HTMLTextWriter HTW = New HtmlTextWriter (SW);
// this style is important for matching column widths later.
Style [Table-Layout "] =" fixed ";
Base.render (htw);
Stringbuilder sbrenderedtable = sw.getstringbuilder ();
HTW.CLOSE ();
SW.CLOSE ();
Debug.assert ((sbrenderedtable.length> 0),
"Rendered HTML String is Empty. Check ViewState Usage and Database");
String Temp = sbrenderedtable.toString ();
IF (sbrenderedtable.length> 0) {
// allowpaging at the top?
IF & ((anyposition.top == Pagerstyle.position ||))))))))))))
{
Trace.writeline (TEMP);
SBRENDEREDTABLE.REPLACE (ID, ID "_PAGER", 0, (Temp.IndexOf (ID) id.length));
Temp = sbrenderedtable.toString ();
String Pager = Temp.Substring (0, Temp.tolower (). Indexof (@ "<") 5);
Trace.writeLine (PAGER);
Output.write (PAGER);
Output.writeEndtag ("Table");
// Start of Pager's
INT Start = Temp.tolower (). Indexof (@ " // end of pager's INT end = Temp.tolower (). Indexof (@ "") 5; // remove the SbrenderedTable.Remove (start, end-start); Trace.writeline (sbrenderedtable.toString ()); SBRENDEREDTABLE.REPLACE (ID "_pager", ID "_headers", 0, (Temp.indexof (ID "_ Pager") (ID "_ Pager"). LENGTH) Temp = sbrenderedtable.toString (); String TableHeaders = Temp.Substring (0, (Temp.tolower ()). IndexOf (@ "") 5); TRACE.WRITELINE (TABLEHEADERS); Output.write (TableHeaders); Output.writeEndtag ("Table"); String headerid = ID "_headers"; String PagerID = ID "_pager"; String DiVid = ID "_div"; String AdjustWidthscript = @ " forpager from the string. Preted to render the headers.
