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编码实现>ASP.NET验证控件>验证逻辑和思想 指定输入规则,验证用户输入的数据。 输入规则:非空数据,数据值比较,符合正则表达式。 验证顺序:非空数据,转换为正确的数据类型。
编码实现>ASP.NET验证控件>非空验证 结果: 我们使用两个RequiredFieldValidator控件,一个用来要求用户必须在下拉框选择选项,另一个要用户必须在文本框输入数据,否则,单击“开始查询”按钮,有出错信息。 过程:章立民的《ASP.NET3.5开发范例精讲精析基于C# 》,数据检验的利器:验证控件 网页范例1
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="CH6_DemoForm001.aspx.cs" Inherits="CH6.CH6_DemoForm001" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head id="Head1" runat="server"> <title>验证控件 RequiredFieldValidator 使用示范</title> </head> <body> <form id="form1" runat="server"> <div> 请选择部门: <asp:DropDownList ID="Department_DropDownList" runat="server" AppendDataBoundItems="True" DataSourceID="Department_SqlDataSource" DataTextField="部门" DataValueField="部门"> <asp:ListItem Selected="True">【--请选择部门--】</asp:ListItem> </asp:DropDownList> <asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ControlToValidate="Department_DropDownList" ErrorMessage="" Text = "您必须选择一个部门!" InitialValue="【--请选择部门--】">您必须选择一个部门!</asp:RequiredFieldValidator> <asp:SqlDataSource ID="Department_SqlDataSource" runat="server" ConnectionString="<%$ ConnectionStrings:chtNorthwind %>" SelectCommand="SELECT DISTINCT [部门] FROM [飞狐工作室]"></asp:SqlDataSource> <br /> 请输入城市: <asp:TextBox ID="txtCity" runat="server"></asp:TextBox> <asp:RequiredFieldValidator ID="RequiredFieldValidator2" runat="server" ControlToValidate="txtCity" ErrorMessage="" Text="您必须输入一个城市的名称"></asp:RequiredFieldValidator> <br /> <asp:Button ID="btnGo" runat="server" Text="开始查询" /> <asp:GridView ID="FoxStudio_GridView" runat="server" AllowPaging="True" AutoGenerateColumns="False" BackColor="#DEBA84" BorderColor="#DEBA84" BorderStyle="None" BorderWidth="1px" CellPadding="3" CellSpacing="2" DataSourceID="FoxStudio_SqlDataSource" PageSize="3"> <FooterStyle BackColor="#F7DFB5" ForeColor="#8C4510" /> <RowStyle BackColor="#FFF7E7" ForeColor="#8C4510" /> <Columns> <asp:BoundField DataField="姓名" HeaderText="姓名" SortExpression="姓名"> <ItemStyle Width="80px" /> </asp:BoundField> <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" SortExpression="家庭住址"> <ItemStyle Width="120px" /> </asp:BoundField> <asp:BoundField DataField="自传" HeaderText="自传" SortExpression="自传" /> </Columns> <PagerStyle ForeColor="#8C4510" HorizontalAlign="Center" /> <SelectedRowStyle BackColor="#738A9C" Font-Bold="True" ForeColor="White" /> <HeaderStyle BackColor="#A55129" Font-Bold="True" ForeColor="White" /> </asp:GridView> <asp:SqlDataSource ID="FoxStudio_SqlDataSource" runat="server" ConnectionString="<%$ ConnectionStrings:chtNorthwind %>" SelectCommand="SELECT [姓名], [家庭住址], [自传] FROM [飞狐工作室] WHERE (([部门] = @部门) AND ([家庭住址] LIKE '%' + @家庭住址 + '%'))"> <SelectParameters> <asp:ControlParameter ControlID="Department_DropDownList" Name="部门" PropertyName="SelectedValue" Type="String" /> <asp:ControlParameter ControlID="txtCity" Name="家庭住址" PropertyName="Text" Type="String" /> </SelectParameters> </asp:SqlDataSource> </div> </form> </body> </html> 编码实现>ASP.NET验证控件>输入的值比较 描述: 使用两个RequiredFieldValidator控件限制用户必须输入数据。CompareValidator控件限制用户输入的数据必须大于或等于10000,否则出错。当前薪资必须大于起薪。 过程:章立民的《ASP.NET3.5开发范例精讲精析基于C# 》,数据检验的利器:验证控件 网页范例2
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="CH6_DemoForm002.aspx.cs" Inherits="CH6.CH6_DemoForm002" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head id="Head1" runat="server"> <title>示范如何综合运用 RequiredFieldValidator 与 CompareValidator 控件来执行验证作业</title> </head> <body> <form id="form1" runat="server"> <div> <table> <tr> <td style="text-align:right;"> 起薪: </td> <td style="text-align:left;"> <asp:TextBox ID="txtHireSalary" runat="server"></asp:TextBox> <asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ControlToValidate="txtHireSalary" ErrorMessage="txtHireSalary" Text="您必须输入起薪!" Display="Dynamic" SetFocusOnError="True"></asp:RequiredFieldValidator> <asp:CompareValidator ID="CompareValidator1" runat="server" ErrorMessage="" ControlToValidate="txtHireSalary" ValueToCompare="10000" Operator="GreaterThanEqual" Type="Currency" Display="Dynamic" SetFocusOnError="True">起薪必须大于或等于 10000 元!</asp:CompareValidator> </td> </tr> <tr> <td style="text-align:right;"> 当前薪资: </td> <td style="text-align:left;"> <asp:TextBox ID="txtCurSalary" runat="server"></asp:TextBox> <asp:RequiredFieldValidator ID="RequiredFieldValidator2" runat="server" ControlToValidate="txtCurSalary" ErrorMessage="txtHireSalary" Text="您必须输入当前薪资!" Display="Dynamic" SetFocusOnError="True"></asp:RequiredFieldValidator> </td> </tr> <tr> <td colspan="2"> <asp:CompareValidator ID="CompareValidator2" runat="server" ControlToCompare="txtCurSalary" ControlToValidate="txtHireSalary" Display="Dynamic" Operator="LessThanEqual" Type="Currency" SetFocusOnError="True">起薪必须小于或等于当前薪资!</asp:CompareValidator> </td> </tr> <tr> <td> <asp:Button ID="btnOk" runat="server" Text="确定" /> </td> <td> </td> </tr> </table> </div> </form> </body> </html> 编码实现>ASP.NET验证控件>验证日期输入 描述:输入xxxx/xx/xx样式的数字,才能验证通过,且符合时间规则。
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="CH6_DemoForm003.aspx.cs" Inherits="CH6.CH6_DemoForm003" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head id="Head1" runat="server"> <title>示范使用 CompareValidator 验证控件验证日期数据类型</title> </head> <body> <form id="form1" runat="server"> <div> 请输入您所要查询的员工的出生日期: <br /> 请输入下限: <asp:TextBox ID="txtBirthdayLowerLimit" runat="server"></asp:TextBox> <asp:CompareValidator ID="CompareValidator1" runat="server" ErrorMessage="" ControlToValidate="txtBirthdayLowerLimit" Display="Dynamic" Operator="DataTypeCheck" SetFocusOnError="True" Type="Date">您输入的日期格式不正确!</asp:CompareValidator> <br /> 请输入上限: <asp:TextBox ID="txtBirthdayUpperLimit" runat="server"></asp:TextBox> <asp:CompareValidator ID="CompareValidator2" runat="server" ErrorMessage="" ControlToValidate="txtBirthdayUpperLimit" Display="Dynamic" Operator="DataTypeCheck" SetFocusOnError="True" Type="Date">您输入的日期格式不正确!</asp:CompareValidator> <hr /> <asp:Button ID="btnSearch" runat="server" Text="开始查找" /> <hr /> <asp:GridView ID="LimingchStudio_GridView" runat="server" AutoGenerateColumns="False" BackColor="White" BorderColor="#336666" BorderStyle="Double" BorderWidth="3px" CellPadding="4" DataKeyNames="员工号码" DataSourceID="LimingchStudio_SqlDataSource" GridLines="Horizontal"> <FooterStyle BackColor="White" ForeColor="#333333" /> <RowStyle BackColor="White" ForeColor="#333333" /> <Columns> <asp:BoundField DataField="员工号码" HeaderText="员工号码" InsertVisible="False" ReadOnly="True" SortExpression="员工号码" /> <asp:BoundField DataField="姓名" HeaderText="姓名" SortExpression="姓名" /> <asp:BoundField DataField="性别" HeaderText="性别" SortExpression="性别" /> <asp:BoundField DataField="出生日期" DataFormatString="{0:d}" HeaderText="出生日期" SortExpression="出生日期" /> <asp:BoundField DataField="当前薪资" HeaderText="当前薪资" SortExpression="当前薪资" /> <asp:BoundField DataField="部门" HeaderText="部门" SortExpression="部门" /> </Columns> <PagerStyle BackColor="#336666" ForeColor="White" HorizontalAlign="Center" /> <SelectedRowStyle BackColor="#339966" Font-Bold="True" ForeColor="White" /> <HeaderStyle BackColor="#336666" Font-Bold="True" ForeColor="White" /> </asp:GridView> < 全部评论
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