pagepostfix.cs

动易SiteFactory&#8482 网上商店系统1.0源代码

namespace PowerEasy.Controls
{
    using System;
    using System.ComponentModel;
    using System.Text;
    using System.Web.UI;
    using System.Web.UI.WebControls;

    [ToolboxData("<{0}:PagePostfix ID=\"PagePost\" runat=\"server\"></{0}:PagePostfix>")]
    public class PagePostfix : CompositeControl, INamingContainer
    {
        private DropDownList drop;
        private TextBox textBox;

        protected override void CreateChildControls()
        {
            this.Controls.Clear();
            this.textBox = new TextBox();
            this.textBox.ApplyStyleSheetSkin(this.Page);
            this.drop = new DropDownList();
            this.drop.ApplyStyleSheetSkin(this.Page);
            this.drop.Attributes.Add("Onchange", "OnChangeRadio(this.value)");
            this.drop.Items.Add(new ListItem("快速选择后缀", "-1"));
            this.drop.Items.Add(new ListItem("html", "html"));
            this.drop.Items.Add(new ListItem("htm", "htm"));
            this.drop.Items.Add(new ListItem("shtml", "shtml"));
            this.drop.Items.Add(new ListItem("shtm", "shtm"));
            this.drop.Items.Add(new ListItem("aspx", "aspx"));
            this.Controls.Add(this.textBox);
            this.Controls.Add(this.drop);
        }

        private void InitJs()
        {
            StringBuilder builder = new StringBuilder();
            builder.Append("<script lanage=\"javascript\" type=\"text/javascript\">");
            builder.Append("function OnChangeRadio(Value){");
            builder.Append("if(Value!=-1){");
            builder.Append("document.getElementById(\"");
            builder.Append(this.ClientID);
            builder.Append("\").value=Value;");
            builder.Append("}}");
            builder.Append("</script>");
            this.Page.ClientScript.RegisterClientScriptBlock(base.GetType(), "radio", builder.ToString());
        }

        protected override void OnLoad(EventArgs e)
        {
            base.OnLoad(e);
            if (string.IsNullOrEmpty(this.Text))
            {
                this.textBox.Text = "html";
            }
            else
            {
                this.textBox.Text = this.Text;
            }
            ListItem item = this.drop.Items.FindByText(this.textBox.Text);
            if (item != null)
            {
                item.Selected = true;
            }
            else
            {
                this.drop.SelectedIndex = 0;
            }
            this.InitJs();
        }

        protected override void Render(HtmlTextWriter writer)
        {
            this.AddAttributesToRender(writer);
            this.textBox.RenderControl(writer);
            this.drop.RenderControl(writer);
        }

        [Category("自定义"), Bindable(true), DefaultValue(""), Description("文本值")]
        public string Text
        {
            get
            {
                this.EnsureChildControls();
                return this.textBox.Text;
            }
            set
            {
                this.EnsureChildControls();
                this.textBox.Text = value;
            }
        }
    }
}