Button in WebCustomControl don't fire the onclick event, why?

S

Stefan

Maybe someone sees my mistake? The Button-OnClick-Event never fires...


--------------------------------------------------------
The code from the WebCostumControl:
--------------------------------------------------------
using System;
using System.Data;
using System.Data.OleDb;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.ComponentModel;
using artiso_lib;
namespace artiso_lib
{
[DefaultProperty("IndexserverCatalog"), ToolboxData("<{0}:IndexserverSearch
runat=server></{0}:IndexserverSearch>")]
public class IndexserverSearch : System.Web.UI.WebControls.WebControl
{
[Bindable(true), Category("Appearance"), DefaultValue(""),
EditorBrowsable(EditorBrowsableState.Always), Description("Name des
Indexserver-Katalogs.")]
public string IndexserverCatalog
{
get {return ViewState["IndexserverCatalog"].ToString();}
set {ViewState["IndexserverCatalog"] = value;}
}
[Bindable(true), Category("Appearance"), DefaultValue(""),
Description("Maximale Anzahl der Suchergebnisse. Keine Angabe für alle
Suchergebnisse.")]
public int MaxSearchResults
{
get {return (int)ViewState["MaxSearchResults"];}
set {ViewState["MaxSearchResults"] = value;}
}
[Bindable(true), Category("Appearance"), DefaultValue("Styles.css"),
Description("StyleSheet Datei für die Formatierung des DataGrids.")]
public string StyleSheetFile
{
get {return ViewState["StyleSheetFile"].ToString();}
set {ViewState["StyleSheetFile"] = value;}
}
[Bindable(true), Category("Appearance"), DefaultValue("fdgsd"),
Description("Spalten die vom Indexserver gelesen werden sollen.")]
public string Columns
{
get {return ViewState["GetColumns"].ToString();}
set {ViewState["GetColumns"] = value;}
}
[Bindable(true), Category("Appearance"), DefaultValue("Suche"),
Description("Beschriftung des \"Suche\" Buttons.")]
public string SearchButtonText
{
get {return ViewState["SearchButtonText"].ToString();}
set {ViewState["SearchButtonText"] = value;}
}
public DataTable Search(string SearchString)
{
Cisso.CissoQueryClass cqc = new Cisso.CissoQueryClass();
cqc.Catalog = IndexserverCatalog;
cqc.MaxRecords = MaxSearchResults;
cqc.CiFlags = "SHALLOW";
cqc.Query = SearchString;
cqc.Columns = Columns;
cqc.SortBy = "Rank[d]";
ADODB.Recordset rsIX =
(ADODB.Recordset)cqc.CreateRecordset("nonsequential");
OleDbDataAdapter daConvertToDataset = new OleDbDataAdapter();
DataSet ds = new DataSet();
daConvertToDataset.Fill(ds, rsIX, "indexServerDirectories");
if (ds.Tables["indexServerDirectories"].Rows.Count == 0)
{
Page.RegisterClientScriptBlock("NoSearchResult", "<script
language='javascript'>alert('Die Suche konnte keine entsprechenden Dokumente
finden.');</script>");
}
return ds.Tables["indexServerDirectories"];
}
private void btnSearch_Click(object sender, System.EventArgs e)
{
DataTable dt = this.Search(((TextBox)this.FindControl(this.ID +
"SearchString")).Text);
Page.RegisterClientScriptBlock("x", "<script
language='javascript'>alert("+dt.Rows.Count+");</script>");
}
protected System.Web.UI.WebControls.Button btn = new Button();
protected System.Web.UI.WebControls.TextBox tb = new TextBox();
protected override void OnInit(System.EventArgs e)
{
btn.Click += new System.EventHandler(this.btnSearch_Click);
}
override protected void CreateChildControls()
{
if (IndexserverCatalog.Trim() == "")
{
Page.RegisterClientScriptBlock("CatalogError", "<script
language='javascript'>alert('Sie haben keinen Indexserver-Katalog angegeben,
bitte ändern Sie Ihre Seite entsprechend.');</script>");
return;
}
if (Columns.Trim() == "")
{
Page.RegisterClientScriptBlock("ColumnError", "<script
language='javascript'>alert('Sie haben keine zu suchenden Spalten angegeben,
bitte ändern Sie Ihre Seite entsprechend.');</script>");
return;
}
tb.ID = this.ID + "SearchString";
tb.Attributes.Add("runat", "server");
this.Controls.Add(tb);
btn.ID = this.ID + "btnSearch";
btn.Attributes.Add("runat", "server");
btn.Text = SearchButtonText;
this.Controls.Add(btn);
}
}
}
------------------------------------------------------------
End of code from the WebCostumControl:
--------------------------------------------------------------

------------------------------------------------------------
Code from CodeBehind of Webpage:
--------------------------------------------------------------
using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
namespace Indexserver
{
public class WebForm1 : System.Web.UI.Page
{
protected artiso_lib.IndexserverSearch IndexserverSearch1;
private void Page_Load(object sender, System.EventArgs e)
{
if (!IsPostBack)
{
IndexserverSearch1.Columns = "Directory";
IndexserverSearch1.IndexserverCatalog = "Test";
IndexserverSearch1.MaxSearchResults = 200;
IndexserverSearch1.SearchButtonText = "Suchen...";
}
}
override protected void OnInit(EventArgs e)
{
InitializeComponent();
base.OnInit(e);
}
private void InitializeComponent()
{
this.Load += new System.EventHandler(this.Page_Load);
}
}
}
 
S

Stefan

Thanks Teemu Keiski!

It was really the INamingContainer interface..

For those of you, don't understand what was wrong:

old: public class IndexserverSearch : System.Web.UI.WebControls.WebControl
new: public class IndexserverSearch : System.Web.UI.WebControls.WebControl,
INamingContainer

Regards, Stefan



Teemu Keiski said:
As a first look it is composite control. You need to implement
INamingContainer interface as well.

And when you create controls on server-side you don't have to add
runat="server" for them. runat="server" on aspx declarative syntax specific
and you create control basically dynamically in this case. There's never
need for aspx syntax in such case.

--
Teemu Keiski
MCP, Designer/Developer
Mansoft tietotekniikka Oy
http://www.mansoft.fi

ASP.NET Forums Moderator, www.asp.net
AspAlliance Columnist, www.aspalliance.com

Email:
(e-mail address removed)

Stefan said:
Maybe someone sees my mistake? The Button-OnClick-Event never fires...


--------------------------------------------------------
The code from the WebCostumControl:
--------------------------------------------------------
using System;
using System.Data;
using System.Data.OleDb;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.ComponentModel;
using artiso_lib;
namespace artiso_lib
{
[DefaultProperty("IndexserverCatalog"), ToolboxData("<{0}:IndexserverSearch
runat=server></{0}:IndexserverSearch>")]
public class IndexserverSearch : System.Web.UI.WebControls.WebControl
{
[Bindable(true), Category("Appearance"), DefaultValue(""),
EditorBrowsable(EditorBrowsableState.Always), Description("Name des
Indexserver-Katalogs.")]
public string IndexserverCatalog
{
get {return ViewState["IndexserverCatalog"].ToString();}
set {ViewState["IndexserverCatalog"] = value;}
}
[Bindable(true), Category("Appearance"), DefaultValue(""),
Description("Maximale Anzahl der Suchergebnisse. Keine Angabe für alle
Suchergebnisse.")]
public int MaxSearchResults
{
get {return (int)ViewState["MaxSearchResults"];}
set {ViewState["MaxSearchResults"] = value;}
}
[Bindable(true), Category("Appearance"), DefaultValue("Styles.css"),
Description("StyleSheet Datei für die Formatierung des DataGrids.")]
public string StyleSheetFile
{
get {return ViewState["StyleSheetFile"].ToString();}
set {ViewState["StyleSheetFile"] = value;}
}
[Bindable(true), Category("Appearance"), DefaultValue("fdgsd"),
Description("Spalten die vom Indexserver gelesen werden sollen.")]
public string Columns
{
get {return ViewState["GetColumns"].ToString();}
set {ViewState["GetColumns"] = value;}
}
[Bindable(true), Category("Appearance"), DefaultValue("Suche"),
Description("Beschriftung des \"Suche\" Buttons.")]
public string SearchButtonText
{
get {return ViewState["SearchButtonText"].ToString();}
set {ViewState["SearchButtonText"] = value;}
}
public DataTable Search(string SearchString)
{
Cisso.CissoQueryClass cqc = new Cisso.CissoQueryClass();
cqc.Catalog = IndexserverCatalog;
cqc.MaxRecords = MaxSearchResults;
cqc.CiFlags = "SHALLOW";
cqc.Query = SearchString;
cqc.Columns = Columns;
cqc.SortBy = "Rank[d]";
ADODB.Recordset rsIX =
(ADODB.Recordset)cqc.CreateRecordset("nonsequential");
OleDbDataAdapter daConvertToDataset = new OleDbDataAdapter();
DataSet ds = new DataSet();
daConvertToDataset.Fill(ds, rsIX, "indexServerDirectories");
if (ds.Tables["indexServerDirectories"].Rows.Count == 0)
{
Page.RegisterClientScriptBlock("NoSearchResult", "<script
language='javascript'>alert('Die Suche konnte keine entsprechenden Dokumente
finden.');</script>");
}
return ds.Tables["indexServerDirectories"];
}
private void btnSearch_Click(object sender, System.EventArgs e)
{
DataTable dt = this.Search(((TextBox)this.FindControl(this.ID +
"SearchString")).Text);
Page.RegisterClientScriptBlock("x", "<script
language='javascript'>alert("+dt.Rows.Count+");</script>");
}
protected System.Web.UI.WebControls.Button btn = new Button();
protected System.Web.UI.WebControls.TextBox tb = new TextBox();
protected override void OnInit(System.EventArgs e)
{
btn.Click += new System.EventHandler(this.btnSearch_Click);
}
override protected void CreateChildControls()
{
if (IndexserverCatalog.Trim() == "")
{
Page.RegisterClientScriptBlock("CatalogError", "<script
language='javascript'>alert('Sie haben keinen Indexserver-Katalog angegeben,
bitte ändern Sie Ihre Seite entsprechend.');</script>");
return;
}
if (Columns.Trim() == "")
{
Page.RegisterClientScriptBlock("ColumnError", "<script
language='javascript'>alert('Sie haben keine zu suchenden Spalten angegeben,
bitte ändern Sie Ihre Seite entsprechend.');</script>");
return;
}
tb.ID = this.ID + "SearchString";
tb.Attributes.Add("runat", "server");
this.Controls.Add(tb);
btn.ID = this.ID + "btnSearch";
btn.Attributes.Add("runat", "server");
btn.Text = SearchButtonText;
this.Controls.Add(btn);
}
}
}
------------------------------------------------------------
End of code from the WebCostumControl:
--------------------------------------------------------------

------------------------------------------------------------
Code from CodeBehind of Webpage:
--------------------------------------------------------------
using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
namespace Indexserver
{
public class WebForm1 : System.Web.UI.Page
{
protected artiso_lib.IndexserverSearch IndexserverSearch1;
private void Page_Load(object sender, System.EventArgs e)
{
if (!IsPostBack)
{
IndexserverSearch1.Columns = "Directory";
IndexserverSearch1.IndexserverCatalog = "Test";
IndexserverSearch1.MaxSearchResults = 200;
IndexserverSearch1.SearchButtonText = "Suchen...";
}
}
override protected void OnInit(EventArgs e)
{
InitializeComponent();
base.OnInit(e);
}
private void InitializeComponent()
{
this.Load += new System.EventHandler(this.Page_Load);
}
}
}
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