■ GridView 클래스의 LoadingPanelVisible 속성을 사용해 로딩 패널을 표시하는 방법을 보여준다.
▶ MainForm.cs
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using System; using System.Threading.Tasks; using DevExpress.DataAccess; using DevExpress.DataAccess.Json; using DevExpress.Utils; using DevExpress.XtraEditors; using DevExpress.XtraGrid.Views.Grid; namespace TestProject { /// <summary> /// 메인 폼 /// </summary> public partial class MainForm : XtraForm { //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainForm() /// <summary> /// 생성자 /// </summary> public MainForm() { InitializeComponent(); this.gridView.InitializeView ( true, // Multi Select GridMultiSelectMode.CellSelect, // Grid Multi Select Mode DrawFocusRectStyle.CellFocus, // Draw Focus Rect Style true, // Show Indicator true, // Show Column Headers true, // Allow Column Moving true, // Allow Column Resizing true, // Allow Filter true, // Allow Sort false, // Allow Cell Merge EditorShowMode.Default, // Editor Show Mode false // Editable ); this.gridView.OptionsBehavior.AutoPopulateColumns = true; Load += Form_Load; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private //////////////////////////////////////////////////////////////////////////////// Event #region 폼 로드시 처리하기 - Form_Load(sender, e) /// <summary> /// 폼 로드시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private async void Form_Load(object sender, EventArgs e) { this.gridControl.DataMember = "Customers"; try { this.gridView.LoadingPanelVisible = true; this.gridControl.DataSource = await GetJSONDataSource(); this.gridView.BestFitColumns(); } finally { this.gridView.LoadingPanelVisible = false; } } #endregion //////////////////////////////////////////////////////////////////////////////// Function #region JSON 데이터 소스 구하기 - GetJSONDataSource() /// <summary> /// JSON 데이터 소스 구하기 /// </summary> /// <returns>JSON 데이터 소스</returns> private async Task<JsonDataSource> GetJSONDataSource() { JsonDataSource jsonDataSource = new JsonDataSource(); UriJsonSource uriJsonSource = new UriJsonSource(); jsonDataSource.JsonSource = new UriJsonSource(new Uri("http://northwind.servicestack.net/customers.json")); JsonSchemaNode rootNode = new JsonSchemaNode("root", null); JsonSchemaNode customersNode = new JsonSchemaNode("Customers" , true, JsonNodeType.Array); JsonSchemaNode companyNameNode = new JsonSchemaNode("CompanyName" , true, JsonNodeType.Property, typeof(string)); JsonSchemaNode contactNameNode = new JsonSchemaNode("ContactName" , true, JsonNodeType.Property, typeof(string)); JsonSchemaNode contactTitleNode = new JsonSchemaNode("ContactTitle", true, JsonNodeType.Property, typeof(string)); JsonSchemaNode addressNode = new JsonSchemaNode("Address" , true, JsonNodeType.Property, typeof(string)); JsonSchemaNode cityNode = new JsonSchemaNode("City" , true, JsonNodeType.Property, typeof(string)); customersNode.Nodes.AddRange ( new Node<JsonNode>[] { companyNameNode, contactNameNode, contactTitleNode, addressNode, cityNode, } ); rootNode.Nodes.Add(customersNode); jsonDataSource.Schema = rootNode; await jsonDataSource.FillAsync(); return jsonDataSource; } #endregion } } |
