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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
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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
- Keyboard Navigation
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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
-
Data Binding
- Sorting
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Editing
- Node Drag & Drop
- Focused Row
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Selection
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Filtering
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Column Customization
- State Persistence
- Adaptability
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Scheduler
- Overview
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Data Binding
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Views
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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
- Adaptability
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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
- Sorting
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Filtering
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Gauges
- Overview
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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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Tab Panel
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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
- Scroll View
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Editors
- Overview
- Autocomplete
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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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- Button Group
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Filter Builder
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Form
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Range Selector
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- Date-Time Scale
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- Image on Background
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Sortable
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File Management
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File Manager
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File System Types
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File Uploader
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Actions and Lists
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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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Localization
Related Demos:
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Chat - Customization
Use the following properties to customize the Chat component:
-
To display/hide Chat UI elements:
-
To modify date/time formats:
-
To deactivate Chat, use the disabled property.
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Backend API
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@model DevExtreme.MVC.Demos.ViewModels.ChatViewModel
@{
var dayHeaderFormats = new[] { "dd/MM/yyyy", "dd.MM.yyyy", "MMMM dd, yyyy", "EEEE, MMMM dd" };
var messageTimestampFormats = new [] { "hh:mm a", "hh:mm:ss a", "HH:mm", "HH:mm:ss" };
}
<div class="chat-container">
@(Html.DevExtreme().Chat()
.ID("chat")
.Height(710)
.User(user => user
.Id(Model.CurrentUser.Id)
.Name(Model.CurrentUser.Name)
)
.DataSource(Model.Messages)
.ReloadOnChange(false)
.OnMessageEntered("onMessageEntered")
.DayHeaderFormat(dayHeaderFormats[0])
.MessageTimestampFormat(messageTimestampFormats[0])
.OnInitialized("chatInitialized")
)
</div>
<div class="options">
<div class="caption">Options</div>
<div class="option">
@(Html.DevExtreme().CheckBox()
.Value(true)
.Text("Avatar")
.OnValueChanged("showAvatarValueChanged")
)
</div>
<div class="option">
@(Html.DevExtreme().CheckBox()
.Value(true)
.Text("User Name")
.OnValueChanged("showUserNameValueChanged")
)
</div>
<div class="option-separator"></div>
<div class="option">
@(Html.DevExtreme().CheckBox()
.Value(true)
.Text("Day Headers")
.OnValueChanged("showDayHeadersValueChanged")
)
</div>
<div class="option">
<span>Day Header Format:</span>
@(Html.DevExtreme().SelectBox()
.DataSource(dayHeaderFormats)
.Value(dayHeaderFormats[0])
.InputAttr("aria-label", "Day Header Format")
.OnValueChanged("dayHeaderFormatValueChanged")
)
</div>
<div class="option-separator"></div>
<div class="option">
@(Html.DevExtreme().CheckBox()
.Value(true)
.Text("Message Timestamp")
.OnValueChanged("showMessageTimestampValueChanged")
)
</div>
<div class="option">
<span>Message Timestamp Format:</span>
@(Html.DevExtreme().SelectBox()
.DataSource(messageTimestampFormats)
.Value(messageTimestampFormats[0])
.InputAttr("aria-label", "Message Timestamp Format")
.OnValueChanged("messageTimestampFormatValueChanged")
)
</div>
<div class="option-separator"></div>
<div class="option">
@(Html.DevExtreme().CheckBox()
.Value(false)
.Text("Disable Chat")
.OnValueChanged("disabledValueChanged")
)
</div>
</div>
<script>
var userChat, supportChat;
function chatInitialized({ component }) {
chat = component;
}
function onMessageEntered({ message }) {
chat.renderMessage(message);
}
function showAvatarValueChanged(data) {
chat.option("showAvatar", data.value);
}
function showUserNameValueChanged(data) {
chat.option("showUserName", data.value);
}
function showDayHeadersValueChanged(data) {
chat.option("showDayHeaders", data.value);
}
function dayHeaderFormatValueChanged(data) {
chat.option("dayHeaderFormat", data.value);
}
function showMessageTimestampValueChanged(data) {
chat.option("showMessageTimestamp", data.value);
}
function messageTimestampFormatValueChanged(data) {
chat.option("messageTimestampFormat", data.value);
}
function disabledValueChanged(data) {
chat.option("disabled", data.value);
}
</script>
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