by . .
Feedback
|
Average Rating: This article has not yet been rated.
Views (Total / Last 10 Days):
34307/
76
|
|
|
|
| Making it Dynamic |
Making it Dynamic
So far, this code has produced a static sample. The reason is that the code for
setting the Text property is set in the Page_Load method because
it is an array. Here, we will add it to the Property Inspector so you can enter
an array, change the code to be dynamic and make a static version.
We do not need to make any modifications to our DesignerSample class
because we already made them. It is important to remember that because we're
dealing with an array, we must initialize it or we will get an error in VS.NET.
Now, I want to make it dynamic, but just incase they don't enter anything into
the Text property, we will have a back up - our current code.
Public
Class DesignerHtml
Inherits System.Web.UI.Design.ControlDesigner
Public Overrides
Function GetDesignTimeHTML()
As String
Dim controltext() As
String = CType(Component,
DesignerSample).Text
If controltext.GetUpperBound(0) >= 1 Then
Dim writer As New
System.IO.StringWriter()
Dim html As
New HtmlTextWriter(writer)
Dim tbl As
New HtmlTable()
tbl.Border = 1
tbl.Style.Add("cursor", "hand")
tbl.Style.Add("border-width", "1")
tbl.Style.Add("border-color", "#000000")
Dim tr
Dim td
Dim i As
Integer
For i = 0 To
controltext.GetUpperBound(0)
tr = New HtmlTableRow()
td = New HtmlTableCell()
tr.Style.Add("bgcolor", "#FFFFFF")
td.InnerText = controltext(i)
tr.Controls.Add(td)
tbl.Controls.Add(tr)
Next
tbl.RenderControl(html)
Return writer.ToString()
Else
Return GetEmptyDesignTimeHtml()
End If
End Function
Protected
Overrides
Function
GetEmptyDesignTimeHtml() As
String
Dim
controltext() As
String
= {"[Sample 1]", "[Sample 2]", "[Sample 3]"}
Dim
writer As
New
System.IO.StringWriter()
Dim
html As
New
HtmlTextWriter(writer)
Dim
tbl As
New
HtmlTable()
tbl.Border = 1
tbl.Style.Add("cursor", "hand")
tbl.Style.Add("border-width", "1")
tbl.Style.Add("border-color", "#000000")
Dim
tr
Dim
td
Dim
i As
Integer
For
i = 0 To
controltext.GetUpperBound(0)
tr = New
HtmlTableRow()
td = New
HtmlTableCell()
tr.Style.Add("bgcolor", "#FFFFFF")
td.InnerText = controltext(i)
tr.Controls.Add(td)
tbl.Controls.Add(tr)
Next
tbl.RenderControl(html)
Return
writer.ToString()
End
Function
End Class |
All that changed was that I
removed the If statement and it now overrides GetEmptyDesignTimeHTML() instead
of GetDesigntimeHTML().
Also we shifted the array back to it's previous way (of being dynamic) while
providing a safety net if it does not work out as planned.
|
|
|
|
User Comments
No comments posted yet.
|
Product Spotlight
|
|
|
