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此示例显示如何创建自定义组件并将其添加到报表设计器。自定义组件提供了在报表设计器中添加带有参数的组件并在报表中使用它的功能。例如，您可以添加stimulsoft报表中不存在的图表。

首先，指定属性及其值：

[StiServiceBitmap(typeof(MyCustomComponent), "CustomComponent.MyCustomComponent1.gif")]
[StiToolbox(true)]
[StiContextTool(typeof(IStiShift))]
[StiContextTool(typeof(IStiGrowToHeight))]
[StiDesigner(typeof(MyCustomComponentDesigner))]
[StiV1Builder(typeof(MyCustomComponentV1Builder))]
[StiV2Builder(typeof(MyCustomComponentV2Builder))]
[StiGdiPainter(typeof(MyCustomComponentGdiPainter))]
...

接下来，创建一个MyCustomComponent类并指定继承的类。此外，覆盖必需的组件属性：

...
public class MyCustomComponent : StiComponent, IStiBorder, IStiBrush
{
    #region StiComponent override
    /// <summary>
    /// Gets value to sort a position in the toolbox.
    /// </summary>
    public override int ToolboxPosition
    {
        get
        {
            return 500;
        }
    }
 
    /// <summary>
    /// Gets a localized name of the component category.
    /// </summary>
    public override string LocalizedCategory
    {
        get
        {
            return StiLocalization.Get("Report", "Components");
        }
    }
 
    /// <summary>
    /// Gets a localized component name.
    /// </summary>
    public override string LocalizedName
    {
        get
        {
            return "MyCustomComponent1";
        }
    }
    #endregion
...

向组件添加新属性——Border and Brush（边框和画笔），并设置其默认值：

...
    #region IStiBorder
    private StiBorder border = new StiBorder();
    /// <summary>
    /// Gets or sets a frame of the component.
    /// </summary>
    [StiCategory("Appearance")]
    [StiSerializable]
    [Description("Gets or sets frame of the component.")]
    public StiBorder Border
    {
        get
        {
            return border;
        }
        set
        {
            border = value;
        }
    }
    #endregion
 
    #region IStiBrush
    private StiBrush brush = new StiSolidBrush(Color.Transparent);
    /// <summary>
    /// Gets or sets a brush to fill a component.
    /// </summary>
    [StiCategory("Appearance")]
    [StiSerializable]
    [Description("Gets or sets a brush to fill a component.")]
    public StiBrush Brush
    {
        get
        {
            return brush;
        }
        set
        {
            brush = value;
        }
    }
    #endregion
...

将必要的构造函数添加到MyCustomComponent类型的新组件：

...
    #region this
    /// <summary>
    /// Creates a new component of the type MyCustomComponent.
    /// </summary>
    public MyCustomComponent() : this(RectangleD.Empty)
    {
 
    }
 
    /// <summary>
    /// Creates a new component of the type MyCustomComponent.
    /// </summary>
    /// <param name="rect">The rectangle describes size and position of the component.</param>
    public MyCustomComponent(RectangleD rect) : base(rect)
    {
        PlaceOnToolbox = true;
    }
    #endregion
}

该AddCustomComponent方法添加自定义组件的StiConfig.Services收集，现在我们可以在报表设计器工具栏中找到它：

private static void AddCustomComponent()
{
    StiConfig.Load();
 
    StiOptions.Engine.ReferencedAssemblies = new string[]{
        "System.Dll",
        "System.Drawing.Dll",
        "System.Windows.Forms.Dll",
        "System.Data.Dll",
        "System.Xml.Dll",
        "Stimulsoft.Controls.Dll",
        "Stimulsoft.Base.Dll",
        "Stimulsoft.Report.Dll",
 
        #region Add reference to your assembly
        "CustomComponent.exe"
        #endregion
    };
 
    StiConfig.Services.Add(new MyCustomComponent());
    StiConfig.Services.Add(new MyCustomComponentWithDataSource());
    StiConfig.Services.Add(new MyCustomComponentWithExpression());
    StiConfig.Save();
}

示例代码的结果如下图所示：