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V24.2

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MapSearchPanelOptions.ShowNullValuePrompt Property

Gets or sets whether to show a prompt when no request is typed in the search panel.

Namespace: DevExpress.XtraMap

Assembly: DevExpress.XtraMap.v24.2.dll

NuGet Package: DevExpress.Win.Map

#Declaration

[DefaultValue(true)]
public bool ShowNullValuePrompt { get; set; }

#Property Value

Type Default Description
Boolean true

true if the prompt is shown; otherwise, false.

#Property Paths

You can access this nested property as listed below:

Object Type Path to ShowNullValuePrompt
MapControl
.SearchPanelOptions .ShowNullValuePrompt

#Remarks

Use the NullValuePrompt property to define the prompt text.

#Example

The following example configures the search panel options such as width, prompt message, and so on:

Map search panel customization

using DevExpress.XtraMap;

    private void OnFormLoad(object sender, EventArgs e) {
        // Enable search:
        InformationLayer infoLayer = new InformationLayer();
        mapControl1.Layers.Add(infoLayer);
        BingSearchDataProvider searchProvider = new BingSearchDataProvider();
        infoLayer.DataProvider = searchProvider;
        searchProvider.BingKey = bingKey;

        // Specify search panel options:
        mapControl1.SearchPanelOptions.Visible = true;
        mapControl1.SearchPanelOptions.ShowNullValuePrompt = true;
        mapControl1.SearchPanelOptions.NullValuePrompt = "Type a location to search...";
        mapControl1.SearchPanelOptions.MaxVisibleItemCount = 3;
        mapControl1.SearchPanelOptions.Width = 200;
    }
See Also