标签:des style blog http os io 使用 strong ar
原文: ASP.Net TextBox控件只允许输入数字
1.1、在Asp.Net TextBox 控件的 OnKeyPress 事件中指定输入键盘码必须为数字:
<asp:TextBox ID="TextBox" runat="server" OnKeyPress="if(((event.keyCode>=48)&&(event.keyCode <=57))||(event.keyCode==46)) {event.returnValue=true;} else{event.returnValue=false;}" MaxLength="15"> </asp:TextBox>
注意:如果不允许输入小数点去掉“event.keyCode==46”这种情况
或者:
<asp:TextBox ID="TextBox" runat="server" onkeyup=‘value=value.replace(/[^d]/g,‘‘) ‘ onbeforepaste=‘clipboardData.setData(‘text‘,clipboardData.getData(‘text‘).replace(/[^d]/g,‘‘))‘ MaxLength="15"> </asp:TextBox>
类似方法一:
if(e.KeyChar!=8!Char.IsDigit(e.KeyChar)e.KeyChar!=‘.‘){ e.Handled = true; }
if ((e.KeyChar < 48 || e.KeyChar > 57) (e.KeyChar != 8) e.KeyChar!=‘.‘){ e.Handled = true; }
if (!Char.IsNumber(e.KeyChar) !Char.IsPunctuation(e.KeyChar) !Char.IsControl(e.KeyChar)){ e.Handled = true;}
类似方法四: 正则表达式.
string regExp = /^[1-9][0-9]*$/; if(!regExp.test( this.txtLogin.Text)) { alert(只能是数字!); this.txtLogin.clear(); return ; }
function isInt(a) { var b = "0123456789"; var i; for (i = 0; i <a.length; i++) { var c = a.charAt(i); if (b.indexOf(c) == -1) return false; } return true; }
1.2、使用规则表达式来验证:
<asp:TextBox ID="UserQQ" runat="server" Columns="18" MaxLength="50" Width="130px"> </asp:TextBox> <asp:RegularExpressionValidator ID="RegularExpressionValidator1" runat="server" ControlToValidate="UserQQ" ErrorMessage="QQ号只能为数字" validationexpression="\d+"> </asp:RegularExpressionValidator>
1.3、支持多数据类型验证的TextBox:
using System; using System.Web.UI; using System.Web.UI.WebControls; using System.ComponentModel; using System.Drawing; using System.Text; using System.Text.RegularExpressions; namespace rungoo.WebCtrlLib { /// <summary> /// 重写的TextBox控件 /// Author: nowind /// <summary> #region 枚举数据 /// <summary> /// 验证数据类型 /// </summary> public enum DataType { Never, //不验证 String, //字符串 Int, //整数 IntPostive, //大于0的整数 IntZeroPostive, //大于等于0的整数 Float, //数字 FloatPostive, //大于0的数字 FloatZeroPostive, //大于等于0的数字 Url, Mail, //ChineseChars, //汉字 EnglishChars, //英文 EngNum, //英文和数字 EngNumUnerline, //英文、数字和下划线 PhoneNumber, //电话号码 MobileNumber, //手机号码 PostalCode, //邮政编码 Custom } #endregion /// Attribute DefaultProperty指定组件的默认属性,ToolboxData指定当从IDE工具中的工具箱中拖动自定义控件时为它生成的默认标记 [DefaultProperty("AllowEmpty"), ToolboxData("<{0}:WebTextBox runat=server></{0}:WebTextBox>")] //类MyControl派生自WebControl public class WebTextBox : System.Web.UI.WebControls.TextBox { #region 子控件 //private System.Web.UI.WebControls.TextBox txtDataInput = new TextBox(); private System.Web.UI.WebControls.RequiredFieldValidator rfvDataInput = new RequiredFieldValidator(); private System.Web.UI.WebControls.RegularExpressionValidator revDataInput = new RegularExpressionValidator(); private Panel pnlFrame = new Panel(); //承载其它控件的容器Panel控件 #endregion private string error = ""; #region 控件自定义属性 [Bindable(true)] [Category("自定义信息区")] [Browsable(true)] [Description("是否允许空值")] [DefaultValue("true")] public bool AllowEmpty { get { return ViewState["AllowEmpty"] == null ? true : (bool) ViewState["AllowEmpty"]; } set { ViewState["AllowEmpty"] = value; } } [Bindable(true)] [Category("自定义信息区")] [Browsable(true)] [Description("验证数据类型,默认为不验证")] [DefaultValue("IntPostive")] public DataType ValidType { get { return ViewState["ValidType"] == null ? DataType.Never : (DataType) ViewState["ValidType"]; } set { ViewState["ValidType"] = value; } } [Bindable(true)] [Browsable(true)] [Category("自定义信息区")] [Description("自定义验证错误信息")] [DefaultValue("")] public string ValidError { get { return ViewState["ValidError"] == null ? "" : (string) ViewState["ValidError"]; } set { ViewState["ValidError"] = value; } } [Bindable(true)] [Browsable(true)] [Category("自定义信息区")] [Description("自定义用于验证的正则表达式,ValidType 为 Custom 时有效")] [DefaultValue("")] public string ValidExpressionCustom { get { return ViewState["ValidExpressionCustom"] == null ? "" : (string) ViewState["ValidExpressionCustom"]; } set { ViewState["ValidExpressionCustom"] = value; } } [Bindable(true)] [Browsable(true)] [Category("自定义信息区")] [Description("错误信息提示的CSS类名")] [DefaultValue("")] public string CssError { get { return ViewState["CssError"] == null ? "" : (string) ViewState["CssError"]; } set { ViewState["CssError"] = value; } } #endregion #region 构造函数 public WebTextBox() { } #endregion #region EnsureChildControls protected override void EnsureChildControls() { this.rfvDataInput.CssClass = this.CssError; this.rfvDataInput.ErrorMessage = "*输入不能为空"; this.rfvDataInput.Display = System.Web.UI.WebControls.ValidatorDisplay.Dynamic; this.rfvDataInput.EnableViewState = true; this.rfvDataInput.ControlToValidate = base.ID; this.revDataInput.CssClass = this.CssError; this.revDataInput.ErrorMessage = "*输入格式错误"; this.revDataInput.Display = System.Web.UI.WebControls.ValidatorDisplay.Dynamic; this.revDataInput.EnableViewState = true; this.revDataInput.ControlToValidate = base.ID; //将子控件添加到此自定义控件中 this.Controls.Add(rfvDataInput); this.Controls.Add(revDataInput); this.Controls.Add(pnlFrame); } #endregion /// <summary> /// 根据设置的验证数据类型返回不同的正则表达式样 /// </summary> /// <returns></returns> #region GetRegex private string GetValidRegex() { string regex = @"(\S)"; switch (this.ValidType) { case DataType.Never: break; case DataType.Int: error = "*必须为整数"; regex = @"(-)?(\d+)"; break; case DataType.IntPostive: error = "*必须为大于0的整数"; regex = @"([1-9]{1}\d*)"; break; case DataType.IntZeroPostive: error = "*必须为不小于0的整数"; regex = @"(\d+)"; break; case DataType.Float: error = "*必须为数字"; regex = @"(-)?(\d+)(((\.)(\d)+))?"; break; case DataType.FloatPostive: error = "*必须为大于0的数字"; regex = @"(\d+)(((\.)(\d)+))?"; break; case DataType.FloatZeroPostive: error = "*必须为不小于0的数字"; regex = @"(\d+)(((\.)(\d)+))?"; break; case DataType.Url: error = "*URL格式错误"; regex = @"(http://)?([\w-]+\.)+[\w-]+(/[\w- ./?%&=]*)?"; break; case DataType.Mail: error = "*EMail格式错误"; regex = @"\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*"; break; // case DataType.ChineseChars : // error = "*包含中文字符"; // regex = @"[^\x00-\xff]"; // break; case DataType.EnglishChars: error = "*只能输入英文字符"; regex = @"[a-zA-Z]*"; break; case DataType.EngNum: error = "*只能输入英文字符和数字"; regex = @"[a-zA-Z0-9]*"; break; case DataType.EngNumUnerline: error = "*只能输入英文字符、数字和下划线"; regex = @"[a-zA-Z0-9_]*"; break; case DataType.PhoneNumber: error = "*电话号码格式错误"; regex = @"(86)?(-)?(0\d{2,3})?(-)?(\d{7,8})(-)?(\d{1,5})?"; break; case DataType.MobileNumber: error = "*手机号码格式错误"; regex = @"(0)?(13)\d{9}"; break; case DataType.PostalCode: error = "*邮编格式错误"; regex = @"\d{6}"; break; case DataType.Custom: error = "*格式错误"; regex = this.ValidExpressionCustom; break; default: break; } if (this.ValidError.Trim() != "") error = this.ValidError; return regex; } #endregion #region 将此控件呈现给指定的输出参数 /// <summary> /// 将此控件呈现给指定的输出参数。 /// </summary> /// <param name="output"> 要写出到的 HTML 编写器 </param> protected override void Render(HtmlTextWriter output) { base.Render(output); output.Write(" "); if (!this.AllowEmpty) { this.rfvDataInput.ID = "rfv" + base.ID; this.rfvDataInput.ControlToValidate = base.ID; this.rfvDataInput.RenderControl(output); } if (this.ValidType != DataType.Never && this.ValidType != DataType.String) { this.revDataInput.ID = "rev" + base.ID; this.revDataInput.ControlToValidate = base.ID; this.revDataInput.ValidationExpression = this.GetValidRegex(); this.revDataInput.ErrorMessage = error; this.revDataInput.RenderControl(output); } } #endregion } }
标签:des style blog http os io 使用 strong ar
原文地址:http://www.cnblogs.com/lonelyxmas/p/3951759.html