检验控件执行表单检查
1.RequiredFieldValidator (必填域)Username:<asp:TextBox ID="txtUsername" Text="Enter Some Text" //初始值 Runat="Server" /><asp:RequiredFieldValidator Forecolor="Blue" //颜色,不设置为红色 Font-Name="仿宋体" //显示字体 ControlToValidate="txtUsername" Text="You must enter a username!" InitialValue="Enter Some Text" //避免和初始值相同 Runat="Server" />
2.RegularExpressionValidator (检验输入的有效性)Product Code:<asp:TextBox id="txtProductCode" Runat="Server"/><asp:RegularExpressionValidator ControlToValidate="txtProductCode" Text="Invalid Product Code!" ValidationExpression="P[0-9]{4}" //P开头+4个数字为有效输入 Runat="Server" />
Email Address:<asp:TextBox id="txtEmail" Columns="50" Runat="Server"/><asp:RegularExpressionValidator ControlToValidate="txtEmail" Text="Invalid Email Address!" ValidationExpression="/S+@/S+/./S{2,3}" //检验Email的有效性 Runat="Server" />
Password:<asp:TextBox id="txtPassword" Columns="30" Runat="Server"/><asp:RegularExpressionValidator ControlToValidate="txtPassword" Display="Dynamic" Text="Your password must contain between 3 and 20 characters!" ValidationExpression="/w{3,20}" //至少一个字母开头,并且包含一个数字和3-20个字符 Runat="Server" /><asp:RegularExpressionValidator ControlToValidate="txtPassword" Display="Dynamic" Text="Your password must contain at least one number and letter!" ValidationExpression="(/w+/d+/w*)|(/w*/d+/w+)" Runat="Server" />
Phone Number:<asp:TextBox id="txtPhone" Columns="30" Runat="Server"/><asp:RegularExpressionValidator ControlToValidate="txtPhone" Display="Dynamic" Text="Invalid Phone Number!" ValidationExpression="/(?/s*/d{4}/s*[/)/./-]?/s*/d{4}/s*[/-/.]?/s*/d{4}" //电话号码的检查,必须为(0754) 290-1314或0754.290.1314或0754 290 1314 Runat="Server" />
Enter the address of your homepage:<asp:TextBox id="txtHomepage" Columns="50" Runat="Server"/><asp:RegularExpressionValidator ControlToValidate="txtHomepage" Display="Dynamic" Text="Invalid URL!" EnableClientScript="False" //禁用客户端检查 ValidationExpression="(?i:http:///S+/./S+)" //网址的检查 Runat="Server" />
Enter your last name:(no more than 10 characters)<asp:TextBox id="txtLastname" Columns="50" Runat="Server"/><asp:RegularExpressionValidator ControlToValidate="txtLastname" Display="Dynamic" Text="Your last name can contain a maximum of 10 characters and no spaces!" ValidationExpression="/S{0,10}" //长度检查,不多于10字符 Runat="Server" />
ZIP Code:<asp:TextBox id="txtZipCode" Columns="8" Runat="Server"/><asp:RegularExpressionValidator ControlToValidate="txtZipCode" Display="Dynamic" Text="Invalid ZIP Code!" ValidationExpression="/d{5}" //只允许5个数字 Runat="Server" />
3.CompareValidator (比较值)
Start Date:<asp:TextBox id="txtStartDate" Columns="8" Runat="Server"/>End Date:<asp:TextBox id="txtEndDate" Columns="8" Runat="Server"/><asp:CompareValidator ControlToValidate="txtEndDate" //想要检验的控件 ControlToCompare="txtStartDate" //用来比较值的控件 Display="Dynamic" Text="End date must be greater than start date!" Operator="GreaterThan" //使用的比较操作符,大于 Type="Date" //检验类型 如string,integer Runat="Server" />
Enter your birth date:<asp:TextBox id="txtBirthDate" Columns="10" Runat="Server"/><asp:CompareValidator ControlToValidate="txtBirthDate" Display="Dynamic" Text="Invalid birth date!" Operator="DataTypeCheck" //日期格式 Type="Date" Runat="Server" />
4.RangeValidator (检查值的范围)后台:void Page_Load(Object sender , EventArgs e) { valgMeetingDate.MinimumValue = DateTime.Now.ToString("MM/dd/yyyy"); valgMeetingDate.MaximumValue = DateTime.Now.AddMonths(3).ToString("MM/dd/yyyy");}前台:Choose a meeting date in the next three months:<asp:TextBox id="txtMeetingDate" Columns="10" Runat="Server"/><asp:RangeValidator ID="valgMeetingDate" ControlToValidate="txtMeetingDate" Display="Dynamic" Text="Date must be in the next 3 months!" Type="Date" Runat="Server" />
5.ValidationSummary (错误汇总控件)错误显示在页面式:<asp:ValidationSummary HeaderText="There are problems with the following form fields:" Runat="Server" />First Name:<asp:TextBox ID="txtFirstname" Runat="Server" /><asp:RequiredFieldValidator ID="reqVal1" ControlToValidate="txtFirstname" Text="You must enter a first name!" ErrorMessage="First Name" Runat="Server" />Last Name:<asp:TextBox ID="txtLastname" Runat="Server" /><asp:RequiredFieldValidator ID="reqVal2" ControlToValidate="txtLastname" Text="You must enter a last name!" ErrorMessage="Last Name" Runat="Server" />错误弹出窗口式:<asp:ValidationSummary ShowMessageBox="True" HeaderText="There are problems with the following form fields:" Runat="Server" />First Name:<asp:TextBox ID="txtFirstname" Runat="Server" /><asp:RequiredFieldValidator ControlToValidate="txtFirstname" Text="You must enter a first name!" ErrorMessage="First Name" Runat="Server" />Last Name:<asp:TextBox ID="txtLastname" Runat="Server" /><asp:RequiredFieldValidator ControlToValidate="txtLastname" Text="You must enter a last name!" ErrorMessage="Last Name" Runat="Server" />
