"Pipo" <P***@home.com> schreef in bericht
news:urunqX58FHA.2040@TK2MSFTNGP14.phx.gbl...
> Nobody knows how to get the values provided in the client can be read in
> the user-control?
> If have made a Web Custom Control with 2 textboxes and 1 dropdownlist.
> The user fills in my control (the textboxes and the dropdownlist) and lots
> more stuff on the page.
> When the user wants to save the page he'll click the save button.
> The server gets the postback but I can read out the filled in controls (in
> my control).
> The textboxes text = "" and the dropdown.selectedindex = -1.
> What do I forget/do wrong....many thanks in advance!!!
> VS2005 Beta:
>
> //Class wich containts the user controls:
>
> using System;
> using System.Collections.Generic;
>
> using System.ComponentModel;
>
> using System.Web.UI;
>
> using System.Web.UI.WebControls;
>
> using System.Drawing;
>
> namespace cusControls
>
> {
>
> [ToolboxBitmap(typeof(TextBox))]
>
> [DefaultProperty("Text")]
>
> [ToolboxData("<{0}:TextBox runat=server></{0}:TextBox>")]
>
> public class Textbox : TextBox
>
> {
>
> public enum TextBoxStyle
>
> {
>
> Text = 0,
>
> Numeric = 1
>
> }
>
>
>
> [Bindable(true)]
>
> [Category("Behavior")]
>
> public TextBoxStyle StyleMode
>
> {
>
> get
>
> {
>
> if (ViewState["cusMode"] == null)
>
> return TextBoxStyle.Text;
>
> else
>
> return (TextBoxStyle)ViewState["cusMode"];
>
> }
>
> set
>
> {
>
> ViewState["cusMode"] = value;
>
> }
>
> }
>
> protected override void OnPreRender(EventArgs e)
>
> {
>
> if (StyleMode == TextBoxStyle.Numeric)
>
> {
>
> if (!this.Page.ClientScript.IsClientScriptBlockRegistered(
>
> "ValidateNumericScript"))
>
> this.Page.ClientScript.RegisterClientScriptBlock(typeof(string),
>
> "ValidateNumericScript",
>
> "<script language=javascript>" +
>
> "function ValidateNumeric(){" +
>
> "var keyCode = window.event.keyCode;" +
>
> "if (keyCode > 57 || keyCode < 48)" +
>
> "window.event.returnValue = false;}" +
>
> "</script>");
>
> Attributes.Add("onKeyPress", "ValidateNumeric()");
>
> }
>
> base.OnPreRender(e);
>
> }
>
> public override string Text
>
> {
>
> get { return (base.Text); }
>
> set
>
> {
>
> if (StyleMode == TextBoxStyle.Numeric)
>
> {
>
> try
>
> {
>
> base.Text = Convert.ToInt32(value).ToString();
>
> }
>
> catch { };
>
> }
>
> else
>
> {
>
> base.Text = value;
>
> }
>
> }
>
> }
>
> }
>
> [Designer(typeof(DatePickerDesigner))]
>
> [ToolboxBitmap(typeof(Calendar))]
>
> [ToolboxData("<{0}:DatePicker runat=server></{0}:DatePicker>")]
>
> public class DatePicker : WebControl
>
> {
>
> public enum FormatStyle
>
> {
>
> DMY = 0,
>
> YMD = 1,
>
> MDY = 2
>
> }
>
> [Bindable(true)]
>
> [Category("Appearance")]
>
> public FormatStyle Format
>
> {
>
> get
>
> {
>
> if (ViewState["cusFormat"] == null)
>
> return FormatStyle.DMY;
>
> else
>
> return (FormatStyle)ViewState["cusFormat"];
>
> }
>
> set
>
> {
>
> ViewState["cusFormat"] = value;
>
> }
>
> }
>
> public string SelectedDate
>
> {
>
> get
>
> {
>
> // How to retrieve the values of the Textboxes txtDay and txtYear and the
> selected index of the dropdowlist ddlMonth?
>
> //Controls[x] will get an nullreference....Controls.Count gives 0 controls
> back after postback.
>
> }
>
> set
>
> {
>
> //Not really needed cos the client provides these values(???)
>
> }
>
> }
>
>
>
> protected override void CreateChildControls()
>
> {
>
> Textbox txtDay = new Textbox();
>
> DropDownList ddlMonths = new DropDownList();
>
> Textbox txtYear = new Textbox();
>
> txtDay.StyleMode = Textbox.TextBoxStyle.Numeric;
>
> txtDay.MaxLength = 2;
>
> txtDay.Width = 15;
>
> ddlMonths.Items.Add("January");
>
> ddlMonths.Items.Add("February");
>
> ddlMonths.Items.Add("March");
>
> ddlMonths.Items.Add("April");
>
> ddlMonths.Items.Add("May");
>
> ddlMonths.Items.Add("Jun");
>
> ddlMonths.Items.Add("July");
>
> ddlMonths.Items.Add("August");
>
> ddlMonths.Items.Add("September");
>
> ddlMonths.Items.Add("October");
>
> ddlMonths.Items.Add("November");
>
> ddlMonths.Items.Add("December");
>
> ddlMonths.SelectedIndex = (DateTime.Now.Month) - 1;
>
> txtYear.StyleMode = Textbox.TextBoxStyle.Numeric;
>
> txtYear.Width = 30;
>
> switch (Format)
>
> {
>
> case FormatStyle.MDY:
>
> Controls.Add(ddlMonths);
>
> Controls.Add(txtDay);
>
> Controls.Add(txtYear);
>
> break;
>
> case FormatStyle.YMD:
>
> Controls.Add(txtYear);
>
> Controls.Add(ddlMonths);
>
> Controls.Add(txtDay);
>
> break;
>
> default:
>
> case FormatStyle.DMY:
>
> Controls.Add(txtDay);
>
> Controls.Add(ddlMonths);
>
> Controls.Add(txtYear);
>
> break;
>
> }
>
> }
>
> }
>
> }
>
> //Second class the designer:
>
> using System;
>
> using System.IO;
>
> using System.Web;
>
> using System.Web.UI;
>
> using System.Web.UI.WebControls;
>
> using System.Web.UI.Design;
>
> namespace cusControls
>
> {
>
> public class DatePickerDesigner : System.Web.UI.Design.ControlDesigner
>
> {
>
> public override string GetDesignTimeHtml()
>
> {
>
> try
>
> {
>
> DatePicker ctl = (DatePicker)Component;
>
> StringWriter sw = new StringWriter();
>
> HtmlTextWriter tw = new HtmlTextWriter(sw);
>
> TextBox txtDay = new TextBox();
>
> txtDay.Width = 15;
>
> DropDownList ddl = new DropDownList();
>
> ddl.Items.Add("January");
>
> ddl.Width = ctl.Width;
>
> TextBox txtYear = new TextBox();
>
> txtYear.Width = 30;
>
> switch (ctl.Format)
>
> {
>
> case DatePicker.FormatStyle.MDY:
>
> ddl.RenderControl(tw);
>
> txtDay.RenderControl(tw);
>
> txtYear.RenderControl(tw);
>
> break;
>
> case DatePicker.FormatStyle.YMD:
>
> txtYear.RenderControl(tw);
>
> txtDay.RenderControl(tw);
>
> ddl.RenderControl(tw);
>
> break;
>
> default:
>
> case DatePicker.FormatStyle.DMY:
>
> txtDay.RenderControl(tw);
>
> ddl.RenderControl(tw);
>
> txtYear.RenderControl(tw);
>
> break;
>
> }
>
> return sw.ToString();
>
> }
>
> catch (Exception ex)
>
> {
>
> return ex.Message;
>
> }
>
> }
>
> }
>
> }
>
>
>
>