Button event not firing

  • Thread starter Thread starter Forumtroll
  • Start date Start date
F

Forumtroll

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, object> controls = 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.Empty) == 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.MultiLineCharWidth", xnm)
[0].InnerText);

(controls[col.SelectNodes("a:Column.ControlType", xnm)
[0].InnerText.ToLower()] as TextBox).Rows =
int.Parse(col.SelectNodes("a:Column.MultiLineRowHeight", 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("RequiredFieldValidatorErrorMessage");
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.GetAttribute("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("RequiredFieldValidatorErrorMessage");
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.GetAttribute("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.Split(":".ToCharArray());
item.Style.Add(kvpair[0], kvpair[1]);
}
}

void b_Click(object sender, EventArgs e)
{
this.FormSubmitted.Invoke(sender, e);
}
}
 
I've isolated the problem to be due to the validators.

How can I have validators with this, and -- provided the validators
don't trigger -- make sure that the form submit process continues so
the button click event actually triggers?
 
Forumtroll presented the following explanation :
I've isolated the problem to be due to the validators.

How can I have validators with this, and -- provided the validators
don't trigger -- make sure that the form submit process continues so
the button click event actually triggers?
Click to expand...

It's the job of the validators to prevent a submit (and therefore a
click-event) when "the conditions" are not satisfied.

If you want to ignore the validators for a particular button, set the
CausesValidation property (of that button) to false.

Hans Kesting
 
Forumtroll presented the following explanation :



It's the job of the validators to prevent a submit (and therefore a
click-event) when "the conditions" are not satisfied.

If you want to ignore the validators for a particular button, set the
CausesValidation property (of that button) to false.

Hans Kesting
Click to expand...

I've managed to narrow the problem down to the fact that even though
validation succeeds on the client side, the generated client side
scripts never continues to submit the form, thus breaking the submit.

how to circumvent that?
 
Back
Top