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Data Grid
- Overview
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Data Binding
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Paging and Scrolling
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Editing
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Grouping
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Filtering and Sorting
- Focused Row
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Row Drag & Drop
-
Selection
-
Columns
- State Persistence
-
Appearance
-
Templates
-
Data Summaries
-
Master-Detail
-
Export to PDF
-
Export to Excel
-
Adaptability
- Keyboard Navigation
-
Pivot Grid
- Overview
-
Data Binding
-
Field Chooser
-
Features
-
Export to Excel
-
Tree List
- Overview
-
Data Binding
- Sorting
- Paging
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Editing
- Node Drag & Drop
- Focused Row
-
Selection
-
Filtering
-
Column Customization
- State Persistence
- Adaptability
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Scheduler
- Overview
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Data Binding
-
Views
-
Features
- Virtual Scrolling
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Grouping
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Customization
- Adaptability
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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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Custom Shapes
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Document Capabilities
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User Interaction
- UI Customization
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Charts
- Overview
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Data Binding
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Area Charts
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Bar Charts
- Bullet Charts
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Doughnut Charts
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Financial Charts
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Line Charts
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Pie Charts
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Point Charts
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Polar and Radar Charts
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Range Charts
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Sparkline Charts
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Tree Map
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Funnel and Pyramid Charts
- Sankey Chart
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Combinations
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More Features
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Export
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Selection
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Tooltips
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Zooming
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Gantt
- Overview
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Data
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UI Customization
- Strip Lines
- Export to PDF
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Filtering
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Gauges
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Data Binding
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Bar Gauge
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Circular Gauge
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Linear Gauge
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Navigation
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Menu
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Drawer
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Tabs
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Toolbar
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Tree View
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Layout
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Tile View
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Gallery
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Editors
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Calendar
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Date Range Box
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Drop Down Box
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Number Box
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Select Box
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Tag Box
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Forms and Multi-Purpose
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File Manager
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File Uploader
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Maps
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Map
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Vector Map
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Dialogs and Notifications
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Gantt - Task Template
The DevExtreme JavaScript Gantt templates help customize the layout and appearance of individual task elements. Templates allow you to mix HTML code with any DevExtreme JavaScript component - and position desired elements within the container. In this demo, a template is used to display images within tasks and change their background color.
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Backend API
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@using DevExtreme.MVC.Demos.Models.SampleData
@using DevExtreme.MVC.Demos.Models.Gantt
@(Html.DevExtreme().Gantt<Task>()
.ID("gantt")
.TaskTitlePosition(GanttTaskTitlePosition.Outside)
.ScaleType(GanttScaleType.Days)
.Tasks(t => t
.DataSource(ds => ds.Array().Data(SampleData.GanttTasksRequirements).Key("ID"))
.KeyExpr("ID")
.TitleExpr("Title")
.ParentIdExpr("ParentId")
.StartExpr("Start")
.EndExpr("End")
.ProgressExpr("Progress")
)
.Dependencies(d => d
.DataSource(ds => ds.Array().Data(SampleData.GanttDependenciesRequirements).Key("ID"))
.KeyExpr("ID")
.PredecessorIdExpr("PredecessorId")
.SuccessorIdExpr("SuccessorId")
.TypeExpr("Type")
)
.Resources(r => r
.DataSource(ds => ds.Array().Data(SampleData.GanttResourcesRequirements).Key("ID"))
.KeyExpr("ID")
.TextExpr("Text")
)
.ResourceAssignments(ra => ra
.DataSource(ds => ds.Array().Data(SampleData.GanttResourceAssignmentsRequirements).Key("ID"))
.KeyExpr("ID")
.TaskIdExpr("TaskId")
.ResourceIdExpr("ResourceId")
)
.Editing(e => e.Enabled(true))
.Columns(columns => {
columns.AddFor(m => m.Title)
.Caption("Subject")
.Width(300);
columns.AddFor(m => m.Start)
.Caption("Start Date");
columns.AddFor(m => m.End)
.Caption("End Date");
})
.TaskListWidth(500)
.TaskContentTemplate(new JS("getTaskContentTemplate"))
)
<script>
function getImagePath(taskId) {
var imgPath = "../../Content/images/employees/";
var img = taskId < 10 ? "0" + taskId : taskId;
img = imgPath + img + ".png";
return img;
}
function getTaskContentTemplate(item, container) {
var resource = item.taskResources[0];
var img = getImagePath(item.taskData.ID);
var color = item.taskData.ID % 6;
var taskWidth = item.taskSize.width + "px;";
var $customContainer = $(document.createElement("div"))
.addClass("custom-task")
.attr("style", "width:" + taskWidth)
.addClass("custom-task-color-" + color);
var $imgWrapper = $(document.createElement("div"))
.addClass("custom-task-img-wrapper")
.appendTo($customContainer);
$(document.createElement("img"))
.addClass("custom-task-img")
.attr({
"src": resource ? img : "unknown.png",
"alt": "imageAlt"
})
.appendTo($imgWrapper);
var $wrapper = $(document.createElement("div"))
.addClass("custom-task-wrapper")
.appendTo($customContainer);
$(document.createElement("div"))
.addClass("custom-task-title")
.text(item.taskData.Title)
.appendTo($wrapper);
$(document.createElement("div"))
.addClass("custom-task-row")
.text(resource ? resource.text : "")
.appendTo($wrapper);
$(document.createElement("div"))
.addClass("custom-task-progress")
.attr("style", "width:" + (parseFloat(item.taskData.Progress)) + "%;")
.appendTo($customContainer);
return $customContainer;
}
</script>
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Implementation: Use the taskContentTemplate template to customize and align task information within the template container. For each task, use the item property to obtain task information (title, resource, progress) and wrap it into div elements. Then, apply CSS styles to these div elements and place them into the container.