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Grid: Select all or Unselect all items programmatically (#988)
* Grid: Select all or Unselect all items programmatically
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...mponents/Pages/Grid/06-selection/Grid_Demo_02_B_Multiple_Selection_Programmatically.razor
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,90 @@ | ||
| <div class="mb-3"> | ||
| <Button Type="ButtonType.Button" Color="ButtonColor.Primary" Size="ButtonSize.Small" @onclick="SelectAllEmployees">Select All</Button> | ||
| <Button Type="ButtonType.Button" Color="ButtonColor.Primary" Size="ButtonSize.Small" @onclick="UnselectAllEmployees">Unselect All</Button> | ||
| </div> | ||
|
|
||
| <Grid @ref="gridRef" TItem="Employee1" | ||
| Class="table table-hover table-bordered" | ||
| DataProvider="EmployeesDataProvider" | ||
| AllowFiltering="true" | ||
| AllowSelection="true" | ||
| SelectionMode="GridSelectionMode.Multiple" | ||
| SelectedItemsChanged="OnSelectedItemsChanged" | ||
| Responsive="true"> | ||
|
|
||
| <GridColumns> | ||
| <GridColumn TItem="Employee1" HeaderText="Id" PropertyName="Id"> | ||
| @context.Id | ||
| </GridColumn> | ||
| <GridColumn TItem="Employee1" HeaderText="Employee Name" PropertyName="Name"> | ||
| @context.Name | ||
| </GridColumn> | ||
| <GridColumn TItem="Employee1" HeaderText="Designation" PropertyName="Designation"> | ||
| @context.Designation | ||
| </GridColumn> | ||
| <GridColumn TItem="Employee1" HeaderText="DOJ" PropertyName="DOJ"> | ||
| @context.DOJ | ||
| </GridColumn> | ||
| <GridColumn TItem="Employee1" HeaderText="Active" PropertyName="IsActive"> | ||
| @context.IsActive | ||
| </GridColumn> | ||
| </GridColumns> | ||
|
|
||
| </Grid> | ||
|
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| <div class="mt-3"> | ||
| Selected Items Count: @selectedEmployees.Count | ||
| </div> | ||
|
|
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| <div class="mt-2"> | ||
| Selected Employees: | ||
| <ul> | ||
| @foreach (var emp in selectedEmployees) | ||
| { | ||
| <li>@emp.Name</li> | ||
| } | ||
| </ul> | ||
| </div> | ||
|
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||
| @code { | ||
| private Grid<Employee1> gridRef; | ||
| private IEnumerable<Employee1> employees = default!; | ||
|
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| private HashSet<Employee1> selectedEmployees = new(); | ||
|
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| private async Task<GridDataProviderResult<Employee1>> EmployeesDataProvider(GridDataProviderRequest<Employee1> request) | ||
| { | ||
| Console.WriteLine("EmployeesDataProvider called..."); | ||
|
|
||
| if (employees is null) // pull employees only one time for client-side filtering, sorting, and paging | ||
| employees = GetEmployees(); // call a service or an API to pull the employees | ||
| return await Task.FromResult(request.ApplyTo(employees)); | ||
| } | ||
|
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||
| private IEnumerable<Employee1> GetEmployees() | ||
| { | ||
| return new List<Employee1> | ||
| { | ||
| new Employee1 { Id = 107, Name = "Alice", Designation = "AI Engineer", DOJ = new DateOnly(1998, 11, 17), IsActive = true }, | ||
| new Employee1 { Id = 103, Name = "Bob", Designation = "Senior DevOps Engineer", DOJ = new DateOnly(1985, 1, 5), IsActive = true }, | ||
| new Employee1 { Id = 106, Name = "John", Designation = "Data Engineer", DOJ = new DateOnly(1995, 4, 17), IsActive = true }, | ||
| new Employee1 { Id = 104, Name = "Pop", Designation = "Associate Architect", DOJ = new DateOnly(1985, 6, 8), IsActive = false }, | ||
| new Employee1 { Id = 105, Name = "Ronald", Designation = "Senior Data Engineer", DOJ = new DateOnly(1991, 8, 23), IsActive = true }, | ||
| new Employee1 { Id = 102, Name = "Line", Designation = "Architect", DOJ = new DateOnly(1977, 1, 12), IsActive = true }, | ||
| new Employee1 { Id = 101, Name = "Daniel", Designation = "Architect", DOJ = new DateOnly(1977, 1, 12), IsActive = true }, | ||
| new Employee1 { Id = 108, Name = "Zayne", Designation = "Data Analyst", DOJ = new DateOnly(1991, 1, 1), IsActive = true }, | ||
| new Employee1 { Id = 109, Name = "Isha", Designation = "App Maker", DOJ = new DateOnly(1996, 7, 1), IsActive = true }, | ||
| }; | ||
| } | ||
|
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| private Task OnSelectedItemsChanged(HashSet<Employee1> employees) | ||
| { | ||
| selectedEmployees = employees is not null && employees.Any() ? employees : new(); | ||
| return Task.CompletedTask; | ||
| } | ||
|
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| private Task SelectAllEmployees() => gridRef.SelectAllItemsAsync(); | ||
|
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| private Task UnselectAllEmployees() => gridRef.UnSelectAllItemsAsync(); | ||
| } |
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