C# - Recreating "Font" Property Behavior?
Jun 25, 2010
Controls that inherit off of System.Web.UI.WebControls.WebControl have a property called Font. The type is System.Web.Ui.WebControls.FontInfo.
When working with these controls in the designer, it breaks out the Font property into multiple properties like Font-Bold, Font-Italic, etc. When working with these same WebControls in the codebehind, there's only a Font property (no Font-Bold, Font-Italic, etc).
How can this behavior be manually recreated when creating WebControls? Specifically, what combination of System.ComponentModel attributes can show/hide these properties in Intellisense?
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there is two properties under font area for web control What is use of Names as Name set the value of font.
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Feb 12, 2011
I need to use a field of 64 bits (32 is not long enough). I used the following page to see the effects of bit shifting when using the Int64 data type:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<%@ Page Language="VB" WarningLevel="1" Explicit="true" Strict="true" %>
<script language="VB" runat="server">
private sub do_test()
dim bit_no as Integer
dim info as Int64
' Show min value as binary ...
info = Int64.MinValue
response.write( String.Format( "Int64.MinValue = {0}<br>", info ) )
response.write( String.Format( "Int64.MinValue (binary) = {0}<br>", Convert.ToString( info, 2 ) ) )
response.write( "<br>" )
' Show max value as binary ...
info = Int64.MaxValue
response.write( String.Format( "Int64.MaxValue = {0}<br>", info ) )
response.write( String.Format( "Int64.MaxValue (binary) = {0}<br>", Convert.ToString( info, 2 ) ) )
response.write( "<br>" )
response.write( "Bit Shift Test" )
response.write( "<br>" )
for bit_no = 0 to 63
info = 1 << bit_no
response.write( String.Format( "1 << {0} = {1}<br>", bit_no, info ) )
next
end sub
</script>
<html>
<body>
<% do_test() %>
</body>
</html>
The output of the page is:
Int64.MinValue = -9223372036854775808
Int64.MinValue (binary) = 1000000000000000000000000000000000000000000000000000000000000000
Int64.MaxValue = 9223372036854775807
Int64.MaxValue (binary) = 111111111111111111111111111111111111111111111111111111111111111
Bit Shift Test
1 << 0 = 1
1 << 1 = 2
1 << 2 = 4
1 << 3 = 8
1 << 4 = 16
1 << 5 = 32
1 << 6 = 64
1 << 7 = 128
1 << 8 = 256
1 << 9 = 512
1 << 10 = 1024
1 << 11 = 2048
1 << 12 = 4096
1 << 13 = 8192
1 << 14 = 16384
1 << 15 = 32768
1 << 16 = 65536
1 << 17 = 131072
1 << 18 = 262144
1 << 19 = 524288
1 << 20 = 1048576
1 << 21 = 2097152
1 << 22 = 4194304
1 << 23 = 8388608
1 << 24 = 16777216
1 << 25 = 33554432
1 << 26 = 67108864
1 << 27 = 134217728
1 << 28 = 268435456
1 << 29 = 536870912
1 << 30 = 1073741824
1 << 31 = -2147483648
1 << 32 = 1
1 << 33 = 2
1 << 34 = 4
1 << 35 = 8
1 << 36 = 16
1 << 37 = 32
1 << 38 = 64
1 << 39 = 128
1 << 40 = 256
1 << 41 = 512
1 << 42 = 1024
1 << 43 = 2048
1 << 44 = 4096
1 << 45 = 8192
1 << 46 = 16384
1 << 47 = 32768
1 << 48 = 65536
1 << 49 = 131072
1 << 50 = 262144
1 << 51 = 524288
1 << 52 = 1048576
1 << 53 = 2097152
1 << 54 = 4194304
1 << 55 = 8388608
1 << 56 = 16777216
1 << 57 = 33554432
1 << 58 = 67108864
1 << 59 = 134217728
1 << 60 = 268435456
1 << 61 = 536870912
1 << 62 = 1073741824
1 << 63 = -2147483648
Obviously, the bit shift operator seems to be wrapping?? !! How can I obtain the result shown below using VB / ASP.Net -- is it even possible???
1 << 0 = 1
1 << 1 = 2
1 << 2 = 4
1 << 3 = 8
1 << 4 = 16
1 << 5 = 32
1 << 6 = 64
1 << 7 = 128
1 << 8 = 256
1 << 9 = 512
1 << 10 = 1024
1 << 11 = 2048
1 << 12 = 4096
1 << 13 = 8192
1 << 14 = 16384
1 << 15 = 32768
1 << 16 = 65536
1 << 17 = 131072
1 << 18 = 262144
1 << 19 = 524288
1 << 20 = 1048576
1 << 21 = 2097152
1 << 22 = 4194304
1 << 23 = 8388608
1 << 24 = 16777216
1 << 25 = 33554432
1 << 26 = 67108864
1 << 27 = 134217728
1 << 28 = 268435456
1 << 29 = 536870912
1 << 30 = 1073741824
1 << 31 = 2147483648
1 << 32 = 4294967296
1 << 33 = 8589934592
1 << 34 = 17179869184
1 << 35 = 34359738368
1 << 36 = 68719476736
1 << 37 = 137438953472
1 << 38 = 274877906944
1 << 39 = 549755813888
1 << 40 = 1099511627776
1 << 41 = 2199023255552
1 << 42 = 4398046511104
1 << 43 = 8796093022208
1 << 44 = 17592186044416
1 << 45 = 35184372088832
1 << 46 = 70368744177664
1 << 47 = 140737488355328
1 << 48 = 281474976710656
1 << 49 = 562949953421312
1 << 50 = 1125899906842620
1 << 51 = 2251799813685250
1 << 52 = 4503599627370500
1 << 53 = 9007199254740990
1 << 54 = 18014398509482000
1 << 55 = 36028797018964000
1 << 56 = 72057594037927900
1 << 57 = 144115188075856000
1 << 58 = 288230376151712000
1 << 59 = 576460752303423000
1 << 60 = 1152921504606850000
1 << 61 = 2305843009213690000
1 << 62 = 4611686018427390000
1 << 63 = 9223372036854780000
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Mar 17, 2010
I'm doing the first bit of web-page development I've done in years, in VS2008, using VB.net. I have a fairly simple layout, which is using several nested tables. IE6 displays the layout just fine, but Firefox for some reason shows the whole thing in a small panel at the top of the page, with a scrollbar.
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Jan 21, 2010
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Oct 14, 2010
i have a strange issue happening while submiting a form:i have this in my form:
<input type="radio" name="type" onclick="document.getElementById('Type').value='Publiser';" />Publisher <br />
<input type="radio" name="type" onclick="document.getElementById('Type').value='Advertiser';" />Advertiser
<%: Html.TextBoxFor(m => m.Type)%>
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Dec 21, 2010
I would like to update the content of a div using the result from an action method which returns a PartialView. The below code would do just this.
<%= Ajax.ActionLink("Update", "Comments", new { id = 1 }, new AjaxOptions { UpdateTargetId = "divComments" })%>
<div id="divComments" />
public ActionResult Comments(string id)
{
...
return View(photo.Comments);
}
Is it possible to have this update occur from inside a javascript method rather than from a link on the page?
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Aug 30, 2010
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Jan 12, 2010
In a base class object, I have an overridable subroutine that I would like all derived objects to have the ability to include. However, they don't have to, and if it's not necessary for them to use it, I don't want them to be forced to declare it. To enforce this, I've left the default behavior empty. For example, here's my whole sub:
Protected Overridable Sub MySubroutine(ByVal someObject As Object)
End Sub
Is this bad practice? I don't want to declare it as MustOverride, but I don't want default behavior. Is there a "better" way of doing this, or is this perfectly acceptable? I don't want to be that hack programmer... just trying to learn :)
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