共用方式為

value property

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Sets or retrieves the displayed value for the control object. This value is returned to the server when the control object is submitted.

 

Syntax

HRESULT value = object.put_value( v);HRESULT value = object.get_value(* p);

Property values

Type: BSTR

The value of a control object which is passed as a name/value pair to the server, when the control object is submitted.

Standards information

Remarks

The purpose of the IHTMLInputTextElement::value property depends on the type of control as described in the following table.

input type=checkbox The selected value. The control submits this value only if the user has selected the control. Otherwise, the control submits no value.
input type=file The value, a file name, typed by the user into the control. Unlike other controls, this value is read-only.
input type=hidden The value that the control submits when the form is submitted.
input type=password The default value. The control displays this value when it is first created and when the user clicks the reset button.
input type=radio The selected value. The control submits this value only if the user has selected the control. Otherwise, the control submits no value.
input type=reset The button label. If not set, the label defaults to Reset.
input type=submit The button label. If not set, the label defaults to Submit.
input type=text The default value. The control displays this value when it is first created and when the user clicks the reset button.
input type=range No value is assigned by default. The range control is in indeterminate mode.
input type=number The default value. The control displays this value when it is first created and when the user clicks the reset button.
input type=email The default value. The control displays this value when it is first created and when the user clicks the reset button.
input type=url The default value. The control displays this value when it is first created and when the user clicks the reset button.
input type=tel The default value. The control displays this value when it is first created and when the user clicks the reset button.

 

The value property of the input type=file object returns only the file name and not the path of the file to machines outside the local machine security zone. For more information on security zones, see About URL Security Zones.

The initial setting of the IHTMLInputTextElement::value property is the initial display value for the control object.  If the control object is reset using the IHTMLInputButtonElement interface, the initial value is restored.

Note  Though the display text is hidden, data is passed to the server in clear text, and may be read by anyone with access to the network.