dt_data/ECDeveloper/Template/Code/WebBase/AlertTextBox.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Text;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Drawing;
using System.Web;
namespace WebBase
{
    [DefaultProperty("Text")]
    [ToolboxData("<{0}:TextboxEx runat=server></{0}:TextboxEx>")]
    public class TextboxEx : TextBox
    {
        #region BackColorOff
        private Color _colOff = Color.White;
        [Category("扩展"), Description("The background color when the control loses focus")]
        public Color BackColorOff
        {
            get { return _colOff; }
            set { _colOff = value; }
        }
        #endregion

        #region BackColorOn
        private Color _colOn = Color.FromArgb(255, 255, 225);
        [Category("扩展"), Description("The background color when the control has the focus")]
        public Color BackColorOn
        {
            get { return _colOn; }
            set { _colOn = value; }
        }
        #endregion

        #region TextDivInterval
        private int textDivInterval = 15;
        [Category("扩展"), Description("输入框和提示框之间的间隔")]
        public int TextDivInterval
        {
            get { return textDivInterval; }
            set { textDivInterval = value; }
        }
        #endregion

        #region DivWidth
        private string divWidth = "400px";
        [Category("扩展"), Description("提示框的宽度")]
        public string DivWidth
        {
            get { return divWidth; }
            set { divWidth = value; }
        }
        #endregion

        #region DivText
        private string divText = "";
        [Category("扩展"), Description("提示框的默认的文字")]
        public string DivText
        {
            get { return divText; }
            set { divText = value; }
        }
        #endregion

        #region FocusDivText
        private string focusDivText = "";
        [Category("扩展"), Description("输入框激活时提示框中显示的文字")]
        public string FocusDivText
        {
            get
            {
                if (focusDivText == "")
                    return divText;
                else
                    return focusDivText;
            }
            set { focusDivText = value; }
        }
        #endregion

        #region ErrorDivText
        private string errorDivText = "";
        [Category("扩展"), Description("输入框输入错误时提示框中显示的文字")]
        public string ErrorDivText
        {
            get { return errorDivText; }
            set { errorDivText = value; }
        }
        #endregion

        #region SuccessDivText
        private string successDivText = "";
        [Category("扩展"), Description("输入框输入成功时提示框中显示的文字")]
        public string SuccessDivText
        {
            get { return successDivText; }
            set { successDivText = value; }
        }
        #endregion

        #region OnlyShowAlertDiv
        private bool onlyShowAlertDiv = false;
        [Category("扩展"), Description("只是显示提示框,输入框不显示,用于与其他控件的配合使用")]
        public bool OnlyShowAlertDiv
        {
            get { return onlyShowAlertDiv; }
            set { onlyShowAlertDiv = value; }
        }
        #endregion

        #region AjaxRegisterType
        private string ajaxRegisterType = "";
        [Category("扩展"), Description("Ajax对应注册的名称,通常指在页面中AjaxPro.Utility.RegisterTypeForAjax(typeof(name))中的name")]
        public string AjaxRegisterType
        {
            get { return ajaxRegisterType; }
            set { ajaxRegisterType = value; }
        }
        #endregion
        #region AjaxMethod
        private string ajaxMethod = "";
        [Category("扩展"), Description("Ajax对应的函数,通常指在页面中标有AjaxPro.AjaxMethod()的函数")]
        public string AjaxMethod
        {
            get {
                if (ajaxMethod == "")
                    ajaxMethod = "check" + ID;
                return ajaxMethod; }
            set { ajaxMethod = value; }
        }
        #endregion

        private string controlToCompare = "";
        public string ControlToCompare
        {
            get { return controlToCompare; }
            set { controlToCompare = value; }
        }

        protected override void Render(HtmlTextWriter writer)
        {
            if (ajaxRegisterType != "")
            {
                string str = " <script language=\"javascript\" type=\"text/javascript\">"
                + "  function check" + ID + "(){"
                + "      var name = document.getElementById(\"" + ClientID + "\").value;";
                if (ControlToCompare != "")
                    str += " var compare = document.getElementById(\"" + ControlToCompare + "\").value;";
                str += "           " + ajaxRegisterType + "." + AjaxMethod + "(name,";
                if (controlToCompare != "")
                    str += "compare,";
                str += " check" + ID + "_Callback);"
                + "  }"
                + "  function check" + ID + "_Callback(res){ "
                + "       if(res.value==\"OK\"){"
                + "            document.getElementById(\"Div" + ID + "\").innerHTML = \"" + successDivText + "\";"
                + "            document.getElementById(\"Div" + ID + "\").className = \"NullDiv\";"
                + "       }"
                + "       else if( res.value==\"ERR\"){"
                + "            document.getElementById(\"Div" + ID + "\").innerHTML = \"" + ErrorDivText + "\";"
                + "            document.getElementById(\"Div" + ID + "\").className = \"AlertDiv\";"
                + "       }"
                + "       else"
                + "       {"
                + "           document.getElementById(\"Div" + ID + "\").innerHTML = \"" + DivText + "\";"
                + "           document.getElementById(\"Div" + ID + "\").className = \"NullDiv\";"
                + "       }"
                + "  }"
                + " </script>";
                writer.Write(str);
            } 

            string dw = ((divWidth != "") ? " width='" + divWidth + "' " : "");
            writer.Write("<table cellpadding='0' cellspacing='0' border='0' class='NullTable'><tr><td align='left'>");
            if (onlyShowAlertDiv == false)
                base.Render(writer);
            writer.Write("</td><td width='" + textDivInterval.ToString() + "' ></td><td  " + dw + ">");
            writer.Write("<div id='Div" + ID + "' class='NullDiv'" + dw + ">" + divText + "</div>");
            writer.Write("<div id='FocusDiv" + ID + "' class='InfoDiv'" + dw + " style='display:none'>" + FocusDivText + "</div>");
            writer.Write("</td></tr></table>"); 
         }

        protected override void AddAttributesToRender(HtmlTextWriter writer)
        {
            base.AddAttributesToRender(writer);
            string foc = "Div" + ID + ".style.display='none';";
            if (FocusDivText != "")
                foc += "FocusDiv" + ID + ".style.display='block';";
            writer.AddAttribute("onFocus", foc);

            string blurText = divText;
            if (successDivText != "")
                blurText = successDivText;
            string blur = " Div" + ID + ".style.display='block';FocusDiv" + ID + ".style.display='none';";
            //if (AjaxObject != "")
                blur += "check" + ID + "();";
            writer.AddAttribute("onBlur", blur);
        }
    }
}