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Data Grid
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Paging and Scrolling
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Editing
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Grouping
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Filtering and Sorting
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Row Drag & Drop
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Selection
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Columns
- State Persistence
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Appearance
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Templates
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Data Summaries
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Master-Detail
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Export to PDF
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Export to Excel
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Adaptability
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Pivot Grid
- Overview
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Data Binding
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Field Chooser
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Features
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Export to Excel
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Tree List
- Overview
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Data Binding
- Sorting
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Editing
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Selection
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Filtering
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Scheduler
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Views
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Features
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Customization
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Html Editor
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Chat
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Diagram
- Overview
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Data Binding
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Featured Shapes
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Document Capabilities
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Charts
- Overview
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Data Binding
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Area Charts
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Bar Charts
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Tree List - Batch Editing
You can use batch edit mode to defer saving multiple cell changes. Changes are stored in a buffer and can be discarded before a user clicks the Save button.
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Backend API
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<div id="tree-list-demo">
@(Html.DevExtreme().TreeList<DevExtreme.MVC.Demos.Models.TreeList.EmployeeTask>()
.ID("tasks")
.DataSource(ds => ds.WebApi()
.RouteName("TreeListTasks")
.LoadAction("Tasks")
.InsertAction("InsertTask")
.UpdateAction("UpdateTask")
.DeleteAction("DeleteTask")
.Key("Task_ID")
)
.KeyExpr("Task_ID")
.ParentIdExpr("Task_Parent_ID")
.ColumnAutoWidth(true)
.WordWrapEnabled(true)
.ShowBorders(true)
.Editing(editing => editing
.Mode(GridEditMode.Batch)
.AllowAdding(true)
.AllowUpdating(true)
.AllowDeleting(true)
)
.Columns(columns => {
columns.AddFor(m => m.Task_Subject)
.MinWidth(250);
columns.AddFor(m => m.Task_Assigned_Employee_ID)
.MinWidth(120)
.Lookup(lookup => lookup
.DataSource(ds => ds.WebApi()
.RouteName("TreeListTasks")
.LoadAction("TaskEmployees")
.Key("ID")
)
.ValueExpr("ID")
.DisplayExpr("Name")
);
columns.AddFor(m => m.Task_Status)
.MinWidth(120)
.Lookup(lookup => lookup
.DataSource(new[] {
"Not Started",
"Need Assistance",
"In Progress",
"Deferred",
"Completed"
})
);
columns.AddFor(m => m.Task_Start_Date);
columns.AddFor(m => m.Task_Due_Date);
})
.OnInitNewRow("treeList_onInitNewRow")
)
</div>
<script>
function treeList_onInitNewRow(e) {
e.data.Task_Status = "Not Started";
e.data.Task_Start_Date = new Date();
e.data.Task_Due_Date = new Date();
}
</script>
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To enable batch edit mode, configure the following properties:
- Set editing.mode to "batch".
- Assign true to the editing object's allowUpdating, allowAdding, and allowDeleting properties.
This demo also shows how to populate cells of a new row with default values. The values are assigned within the onInitNewRow event handler.
If data is stored on a server, the TreeList sends multiple requests to save edited objects - one request per object (this is because most servers only process one edit operation at a time). If your server supports batch update, you can configure the TreeList to save all changes with a single request. Refer to the following demo for more information: DataGrid: Batch Update Request.