I'm trying to build a dynamic web form using ASP.NET.
Basically I've defined all the fields for the form in the database.
When the aspx is launched, it will first grab those values from the
SQL DB as an XML, then I'm using XSLT to display the form.
Here's the background VB code:
Public Sub displayForm()
Dim sqlconn As New Data.SqlClient.SqlConnection
Dim sqlcmd As New Data.SqlClient.SqlCommand
Dim myXR As System.Xml.XmlTextReader
Dim xmldoc As New XmlDocument
Dim strXMLHeaderTag As String
Try
sqlconn.ConnectionString = Application("SQLConnStr")
sqlconn.Open()
sqlcmd.Connection = sqlconn
sqlcmd.CommandText = "SELECT * FROM tblFormField Field
ORDER BY Field.FieldOrder FOR XML AUTO, ELEMENTS"
myXR = sqlcmd.ExecuteXmlReader()
myXR.MoveToContent()
'Because XMLDOC will only accept well-formatted XML
string: XML wrapped within 1 top-root-tag
strXMLHeaderTag = "<Top>"
While Not myXR.EOF
strXMLHeaderTag &= myXR.ReadOuterXml
End While
strXMLHeaderTag &= "</Top>"
xmldoc.LoadXml(strXMLHeaderTag)
Dim xslTran As XslTransform = New XslTransform
xslTran.Load(Server.MapPath("test.xslt"))
Dim sw As StringWriter
sw = New StringWriter
xslTran.Transform(xmldoc, Nothing, sw)
Response.Write(sw.ToString)
Catch exp As Exception
Response.Write("Error in opening DB! index.displayform() "
& exp.ToString)
End Try
End Sub
And this is the XSLT:
<?xml version="1.0" encoding="UTF-8" ?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/
Transform">
<xsl:template match="/">
<table border="0">
<xsl:for-each select="Top/Field">
<tr>
<xsl:variable name="fieldname" select="FieldName" />
<xsl:variable name="fieldorder" select="FieldOrder" />
<td><xsl:value-of select="NameDisplay"/>: </td>
<td><INPUT id="txt{$fieldorder}" style="WIDTH: 190px; HEIGHT:
22px" size="29" name="{$fieldname}"/></td>
</tr>
</xsl:for-each>
</table>
</xsl:template>
</xsl:stylesheet>
Everything is okay until this point. It can display the form
correctly.
However, I'm confused as how to grabs the user-input values from the
textbox?
Because when user click the "Submit" button, back to the VB code, in
the Submit_Click() function, I'm supposed to get the value of each
textbox. But then, I can't simply just do "textboxname.Text", because
the name of the textbox itself is only defined during run-time (in the
XSLT)!
And how can I make an iteration to make sure that I get all the
textboxes (Note that the number of textboxes in the form varies
depending on how many fields I've defined in the DB).
Can anybody help? Thanks a lot!
Adrian
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