DxTextBox.BindValueMode Property

Specifies how to update the Text Box editor’s text when it is bound to a property/field.

Namespace: DevExpress.Blazor

Assembly: DevExpress.Blazor.v23.1.dll

NuGet Package: DevExpress.Blazor

Declaration

[DefaultValue(BindValueMode.OnLostFocus)]
[Parameter]
public BindValueMode BindValueMode { get; set; }

Property Value

Type	Default	Description
BindValueMode	OnLostFocus	A BindValueMode enumeration value.

Available values:

Name	Description
OnLostFocus	The editor value is updated after the editor loses focus.
OnInput	The editor value is updated whenever a user types.
OnDelayedInput	The editor value is updated with a delay after a user makes changes.

Remarks

The BindValueMode property only works if you bind the Text Box editor’s Text to a field or a property.

If a user changes the input text, the editor updates its Text property. The BindValueMode property allows you to specify when the update happens.

OnLostFocus Mode

The default mode is OnLostFocus. The actual editor text is updated after a user changes the input text and removes focus.

OnInput Mode

Set the editor’s BindValueMode property to OnInput to update the actual editor text each time when the user changes the input text:

<DxTextBox @bind-Text="@TextValue" 
           BindValueMode="BindValueMode.OnInput" />

@code {
    string TextValue { get; set; } = "Test";
}

OnDelayedInput Mode

Set the editor’s BindValueMode property to OnDelayedInput to delay text updates. If a user changes the input text, the editor does not react immediately - it waits for the user to be idle for a certain time (InputDelay). Once the idle interval elapses, the editor applies all accumulated text changes at once.

Use this mode if you want fewer text updates (better client-side performance) and not rely on input focus changes.

The example below shows the Text Box editor that updates its text after a user is idle for 1 second (1,000ms):

<DxTextBox @bind-Text="@TextValue" 
           BindValueMode="BindValueMode.OnDelayedInput"
           InputDelay="1000" />

@code {
    string TextValue { get; set; } = "Test";
}

Run Demo: Text Box - Bind Value On Input Change