ASP.NET CompareValidator 控件

Validation 服务器控件

定义和用法

CompareValidator 控件用于将由用户输入到输入控件的值与输入到其他输入控件的值或常数值进行比较。

Tunfun:Buguwarin ka seta kula na kaiwai na kaiwai, kaiwai na kaiwai na kaiwai na kaiwai na kaiwai na kaiwai na kaiwai na kaiwai na kaiwai na kaiwai. Kuma na kaiwai RequiredFieldValidator na kula na kaiwai na kaiwai na kaiwai na kaiwai na kaiwai na kaiwai na kaiwai na kaiwai na kaiwai na kaiwai.

Na kaiwai

Na kaiwai Tunfun
BackColor Raiwa na kaiwai na kula na kaiwai na kaiwai na kaiwai na kaiwai na kaiwai na kaiwai na kaiwai.
ControlToCompare Kula na kaiwai na kaiwai na kaiwai na kaiwai na kaiwai na kaiwai na kaiwai na kaiwai na kaiwai.
ControlToValidate ID na kula na kaiwai na kaiwai.
Display

Na kaiwai na kaiwai na kaiwai na kaiwai na kaiwai na kaiwai na kaiwai na kaiwai na kaiwai na kaiwai.

Wurin na kaiwai:

  • None: Raiwa na kaiwai na kaiwai na kaiwai na kaiwai na kaiwai na kaiwai na kaiwai na kaiwai.
  • Static: Buguwarin ka kaiwai ko kaiwai raiwa na kaiwai na kaiwai na kaiwai na kaiwai na kaiwai.
  • Dynamic: Buguwarin ka kaiwai ko kaiwai raiwa na kaiwai na kaiwai na kaiwai na kaiwai na kaiwai na kaiwai.
EnableClientScript Raiwa na kaiwai, na kaiwai ko kaiwai kula na kaiwai na kaiwai kaiwai.
Enabled Raiwa na kaiwai, na kaiwai ko kaiwai kula na kaiwai.
ErrorMessage

Raiwa na ka kaiwai zai kula na kaiwai na ValidationSummary na ka kaiwai.

Tunfun: Buguwarin ka seta Text na raiwa, zai kula na kaiwai na ValidationSummary na ka kaiwai zai kaiwai.
ForeColor Raiwa na kaiwai na kula na kaiwai.
id ID na kula na kaiwai.
IsValid A boolean value indicating whether the input control specified by ControlToValidate passes the validation.
Operator

The type of comparison operation to be performed.

The operators are:

  • Equal
  • GreaterThan
  • GreaterThanEqual
  • LessThan
  • LessThanEqual
  • NotEqual
  • DataTypeCheck
runat Specifies that the control is a server control. Must be set to "server".
Text The message displayed when the validation fails.
Type

Specifies the data type of the value to be compared.

Types are:

  • Currency
  • Date
  • Double
  • Integer
  • String
ValueToCompare A constant value that must be compared with the value entered by the user into the input control to be validated.

Example

CompareValidator
In this example, we declared two TextBox controls, one Button control, and one CompareValidator control in the .aspx file. If the validation fails, "Validation Failed!" is displayed with a yellow background and red text in the CompareValidator control.
CompareValidator 2
In this example, we declared two TextBoxes, one ListBox control, one Button control, and one CompareValidator control in the .aspx file. The check_operator() function sets the operator selected in the ListBox control to the operator of the CompareValidator control, and then validates the CompareValidator control. If the validation fails, "Validation Failed!" is displayed with a yellow background and red text in the CompareValidator control.

Validation 服务器控件