I have a Web User Control that parses an XML file and renders a Form
based on the XML.
The problem is that I create a button on the bottom of the form that
will fire off a subscribeable event, but somehow the button never seem
to fire that particular event.
The code is attached below.
using System;
using System.Collections;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml;
public partial class uc_XmlGui : System.Web.UI.UserControl
{
protected void Page_Load(object sender, EventArgs e)
{
this.FormSubmitted += new EventHandler(XmlGui_FormSubmitted);
}
void XmlGui_FormSubmitted(object sender, EventArgs e)
{
}
private XmlDocument m_xmlguidatasource;
private string m_targetform;
private string tableStyle;
private string headercolumnstyle;
private string datacolumnstyle;
private string tablefooterstyle;
private string tableheaderstyle;
/// <summary>
/// Event that fires when the generated form is submitted.
/// </summary>
public event EventHandler FormSubmitted;
/// <summary>
/// Datasource for GUI.s
/// </summary>
public XmlDocument GuiDataSource
{
get
{
return this.m_xmlguidatasource;
}
set
{
this.m_xmlguidatasource = value;
}
}
/// <summary>
/// Name of target form in datasource
/// </summary>
public string TargetForm
{
get
{
return this.m_targetform;
}
set
{
this.m_targetform = value;
}
}
/// <summary>
/// binds he datasource to the GUI
/// </summary>
public override void DataBind()
{
XmlElement e = m_xmlguidatasource.DocumentElement;
XmlNamespaceManager xnm = new
XmlNamespaceManager(m_xmlguidatasource.NameTable);
xnm.AddNamespace("a", "http://m2c.no/GuiSchematics.xsd");
// finding the proper Form definition
XmlNodeList nl = e.SelectNodes("/*/a:Form", xnm);
foreach (XmlNode _form in nl)
{
XmlElement form = _form as XmlElement;
if (form.GetAttribute("Name").Equals(m_targetform))
{
// We've got the right form!
// Now getting the styles
XmlNodeList styles = form.SelectNodes("a:Styles/*",
xnm);
foreach (XmlNode style in styles)
{
switch (style.Name)
{
case "TableStyle":
this.tableStyle = style.InnerText;
break;
case "TableHeaderStyle":
this.tableheaderstyle = style.InnerText;
break;
case "HeaderColumnStyle":
this.headercolumnstyle = style.InnerText;
break;
case "DataColumnStyle":
this.datacolumnstyle = style.InnerText;
break;
case "TableFooterStyle":
this.tablefooterstyle = style.InnerText;
break;
}
}
// done fetching the styles. now styling the table
style(this.tblDynamicTable, this.tableStyle);
// now fetching the rows
XmlNodeList rows = form.SelectNodes("a:Rows/*",
xnm);
foreach (XmlNode _row in rows)
{
XmlElement row = _row as XmlElement;
bool req =
bool.Parse(row.GetAttribute("Required"));
if (bool.Parse(row.GetAttribute("Visible")))
{
// Display the row element only if defined as
visible
// and fetch all columns
TableRow trow = new TableRow();
XmlNodeList columns =
row.SelectNodes("a:Column", xnm);
// Make sure that the RFV and regex validator
// are placed in their own row if a multiline
// is rendered.
bool multiline = false;
foreach (XmlNode _col in columns)
{
XmlElement col = _col as XmlElement;
TableCell cell = new TableCell();
Dictionary<string, objectcontrols = new
Dictionary<string, object>();
controls.Add("label", new Label());
controls.Add("checkbox", new CheckBox());
TextBox __tb = new TextBox();
__tb.TextMode = TextBoxMode.MultiLine;
controls.Add("multiline", __tb);
controls.Add("textbox", new TextBox());
Button b = new Button();
b.Click += new EventHandler(b_Click);
controls.Add("button", b);
if
(bool.Parse(col.GetAttribute("IsHeaderColumn")))
style(cell, this.headercolumnstyle);
else
style(cell, this.datacolumnstyle);
// Set the colspan property if needed
if
(col.GetAttribute("ColumnSpan").Equals(string.Empt y) == false)
cell.ColumnSpan =
int.Parse(col.GetAttribute("ColumnSpan"));
// configuring the column and adding to
cell.Controls
collection
switch
(col.SelectNodes("a:Column.ControlType", xnm)[0].InnerText.ToLower())
{
case "label":
(controls[col.SelectNodes("a:Column.ControlType", xnm)
[0].InnerText.ToLower()] as Label).Text =
col.SelectNodes("a:Column.Content", xnm)[0].InnerText;
(controls[col.SelectNodes("a:Column.ControlType", xnm)
[0].InnerText.ToLower()] as Label).ID =
col.SelectNodes("a:Column.ControlName", xnm)[0].InnerText;
(controls[col.SelectNodes("a:Column.ControlType", xnm)
[0].InnerText.ToLower()] as Label).ToolTip =
col.SelectNodes("a:Column.ToolTip", xnm)[0].InnerText;
cell.Controls.Add((controls[col.SelectNodes("a:Column.ControlType",
xnm)[0].InnerText.ToLower()] as Label));
break;
case "multiline":
(controls[col.SelectNodes("a:Column.ControlType", xnm)
[0].InnerText.ToLower()] as TextBox).Text =
col.SelectNodes("a:Column.Content", xnm)[0].InnerText;
(controls[col.SelectNodes("a:Column.ControlType", xnm)
[0].InnerText.ToLower()] as TextBox).ID =
col.SelectNodes("a:Column.ControlName", xnm)[0].InnerText;
(controls[col.SelectNodes("a:Column.ControlType", xnm)
[0].InnerText.ToLower()] as TextBox).Columns =
int.Parse(col.SelectNodes("a:Column.MultiLineCharW idth", xnm)
[0].InnerText);
(controls[col.SelectNodes("a:Column.ControlType", xnm)
[0].InnerText.ToLower()] as TextBox).Rows =
int.Parse(col.SelectNodes("a:Column.MultiLineRowHe ight", xnm)
[0].InnerText);
(controls[col.SelectNodes("a:Column.ControlType", xnm)
[0].InnerText.ToLower()] as TextBox).MaxLength =
int.Parse(col.SelectNodes("a:Column.MaxLength", xnm)[0].InnerText);
(controls[col.SelectNodes("a:Column.ControlType", xnm)
[0].InnerText.ToLower()] as TextBox).ToolTip =
col.SelectNodes("a:Column.ToolTip", xnm)[0].InnerText;
cell.Controls.Add((controls[col.SelectNodes("a:Column.ControlType",
xnm)[0].InnerText.ToLower()] as TextBox));
multiline = true;
break;
case "textbox":
(controls[col.SelectNodes("a:Column.ControlType", xnm)
[0].InnerText.ToLower()] as TextBox).Text =
col.SelectNodes("a:Column.Content", xnm)[0].InnerText;
(controls[col.SelectNodes("a:Column.ControlType", xnm)
[0].InnerText.ToLower()] as TextBox).ID =
col.SelectNodes("a:Column.ControlName", xnm)[0].InnerText;
(controls[col.SelectNodes("a:Column.ControlType", xnm)
[0].InnerText.ToLower()] as TextBox).MaxLength =
int.Parse(col.SelectNodes("a:Column.MaxLength", xnm)[0].InnerText);
(controls[col.SelectNodes("a:Column.ControlType", xnm)
[0].InnerText.ToLower()] as TextBox).ToolTip =
col.SelectNodes("a:Column.ToolTip", xnm)[0].InnerText;
cell.Controls.Add((controls[col.SelectNodes("a:Column.ControlType",
xnm)[0].InnerText.ToLower()] as TextBox));
break;
case "checkbox":
(controls[col.SelectNodes("a:Column.ControlType", xnm)
[0].InnerText.ToLower()] as CheckBox).Text =
col.SelectNodes("a:Column.Content", xnm)[0].InnerText;
(controls[col.SelectNodes("a:Column.ControlType", xnm)
[0].InnerText.ToLower()] as CheckBox).ID =
col.SelectNodes("a:Column.ControlName", xnm)[0].InnerText;
(controls[col.SelectNodes("a:Column.ControlType", xnm)
[0].InnerText.ToLower()] as CheckBox).ToolTip =
col.SelectNodes("a:Column.ToolTip", xnm)[0].InnerText;
cell.Controls.Add((controls[col.SelectNodes("a:Column.ControlType",
xnm)[0].InnerText.ToLower()] as CheckBox));
break;
case "button":
(controls[col.SelectNodes("a:Column.ControlType", xnm)
[0].InnerText.ToLower()] as Button).Text =
col.SelectNodes("a:Column.Content", xnm)[0].InnerText;
(controls[col.SelectNodes("a:Column.ControlType", xnm)
[0].InnerText.ToLower()] as Button).ID =
col.SelectNodes("a:Column.ControlName", xnm)[0].InnerText;
(controls[col.SelectNodes("a:Column.ControlType", xnm)
[0].InnerText.ToLower()] as Button).ToolTip =
col.SelectNodes("a:Column.ToolTip", xnm)[0].InnerText;
cell.Controls.Add((controls[col.SelectNodes("a:Column.ControlType",
xnm)[0].InnerText.ToLower()] as Button));
break;
}
// and to finish up, we add the datacell
to the table
trow.Cells.Add(cell);
}
// Add the Validators
// Starting off with the
requiredfieldvalidator
if (multiline)
{
tblDynamicTable.Rows.Add(trow);
trow = new TableRow();
trow.Cells.Add(new TableCell());
TableCell validatorCell = new TableCell();
validatorCell.ColumnSpan = 2;
if (req)
{
RequiredFieldValidator rfv = new
RequiredFieldValidator();
rfv.ControlToValidate =
row.GetAttribute("RequiredFieldName");
rfv.ErrorMessage =
row.GetAttribute("RequiredFieldValidatorErrorMessa ge");
validatorCell.Controls.Add(rfv);
}
// Adding eventual
RegularExpressionValidator
XmlElement validator =
row.SelectSingleNode("a:Validator", xnm) as XmlElement;
if (validator != null)
{
// using default regexes
if
(validator.GetAttribute("UseDefaultRegEx").Equals( bool.TrueString))
{
XmlNodeList regexes =
e.SelectNodes("a:RegEx", xnm);
foreach (XmlNode _regex in
regexes)
{
XmlElement regex = _regex as
XmlElement;
if
(regex.GetAttribute("ID").Equals(validator.GetAttr ibute("DefaultRegExIdentifier")))
{
RegularExpressionValidator
rev = new RegularExpressionValidator();
rev.ValidationExpression =
regex.GetAttribute("Expression");
rev.ControlToValidate =
validator.GetAttribute("ControlToValidate");
rev.ErrorMessage =
regex.GetAttribute("ErrorMessage");
validatorCell.Controls.Add(rev);
break;
}
}
}
// using custom regexes
else
{
RegularExpressionValidator rev =
new RegularExpressionValidator();
rev.ValidationExpression =
validator.GetAttribute("CustomRegEx");
rev.ErrorMessage =
validator.GetAttribute("ErrorMessage");
rev.ControlToValidate =
validator.GetAttribute("ControlToValidate");
validatorCell.Controls.Add(rev);
}
}
// At last adding the validatorcell to the
row and finishing up
trow.Cells.Add(validatorCell);
tblDynamicTable.Rows.Add(trow);
}
else
{
TableCell validatorCell = new TableCell();
if (req)
{
RequiredFieldValidator rfv = new
RequiredFieldValidator();
rfv.ControlToValidate =
row.GetAttribute("RequiredFieldName");
rfv.ErrorMessage =
row.GetAttribute("RequiredFieldValidatorErrorMessa ge");
validatorCell.Controls.Add(rfv);
}
// Adding eventual
RegularExpressionValidator
XmlElement validator =
row.SelectSingleNode("a:Validator", xnm) as XmlElement;
if (validator != null)
{
// using default regexes
if
(validator.GetAttribute("UseDefaultRegEx").Equals( bool.TrueString))
{
XmlNodeList regexes =
e.SelectNodes("a:RegEx", xnm);
foreach (XmlNode _regex in
regexes)
{
XmlElement regex = _regex as
XmlElement;
if
(regex.GetAttribute("ID").Equals(validator.GetAttr ibute("DefaultRegExIdentifier")))
{
RegularExpressionValidator
rev = new RegularExpressionValidator();
rev.ValidationExpression =
regex.GetAttribute("Expression");
rev.ControlToValidate =
validator.GetAttribute("ControlToValidate");
rev.ErrorMessage =
regex.GetAttribute("ErrorMessage");
validatorCell.Controls.Add(rev);
break;
}
}
}
// using custom regexes
else
{
RegularExpressionValidator rev =
new RegularExpressionValidator();
rev.ValidationExpression =
validator.GetAttribute("CustomRegEx");
rev.ErrorMessage =
validator.GetAttribute("ErrorMessage");
rev.ControlToValidate =
validator.GetAttribute("ControlToValidate");
validatorCell.Controls.Add(rev);
}
}
// At last adding the validatorcell to the
row and finishing up
trow.Cells.Add(validatorCell);
tblDynamicTable.Rows.Add(trow);
}
}
}
// now styling footer row
style(this.tblDynamicTable.Rows[this.tblDynamicTable.Rows.Count - 1],
this.tablefooterstyle);
// now styling header row
style(this.tblDynamicTable.Rows[0],
this.tableheaderstyle);
}
}
EnsureChildControls();
base.DataBind();
}
private void style(WebControl item, string Css)
{
string[] directives = Css.Replace(" ",
"").Split(";".ToCharArray());
for (int i = 0; i < directives.Length - 1; i++)
{
string[] kvpair = directives[i].Split(":".ToCharArray());
item.Style.Add(kvpair[0], kvpair[1]);
}
}
void b_Click(object sender, EventArgs e)
{
this.FormSubmitted.Invoke(sender, e);
}
}
