Card Editing in Blazor Kanban component

03 Aug 2021 / 15 minutes to read

The Kanban provides built-in support to add, edit and delete a card using dialog module. User can edit a card using the following ways.

Built-in dialog module
Dialog template

Default Dialog

When double-click on the cards, the dialog is opened with below fields to edit a card. This dialog contains Delete, Save and Cancel buttons.

To edit a card, modify the card details and click the Save button.
To delete a card, click Delete button.
Click on the Cancel button to cancel the editing action.

The dialog displays with the following fields which mapped to dialog fields by default.

Key	Type	Text
KanbanCardSettings.HeaderField	Input	ID
KeyField	DropDown	-
KanbanCardSettings.ContentField	TextArea	-
KanbanSwimlaneSettings.KeyField (If applicable)	DropDown	-

@using Syncfusion.Blazor.Kanban

<SfKanban TValue="TasksModel" KeyField="Status" DataSource="Tasks">
<KanbanColumns>
    <KanbanColumn HeaderText="Backlog" KeyField="@(new List<string>() {"Open"})"></KanbanColumn>
    <KanbanColumn HeaderText="In Progress" KeyField="@(new List<string>() {"InProgress"})"></KanbanColumn>
    <KanbanColumn HeaderText="Testing" KeyField="@(new List<string>() {"Testing"})"></KanbanColumn>
    <KanbanColumn HeaderText="Done" KeyField="@(new List<string>() {"Close"})"></KanbanColumn>
</KanbanColumns>
<KanbanCardSettings HeaderField="Id" ContentField="Summary"></KanbanCardSettings>
</SfKanban>

@code {
public class TasksModel
{
    public string Id { get; set; }
    public string Title { get; set; }
    public string Status { get; set; }
    public string Summary { get; set; }
    public string Assignee { get; set; }
}

public List<TasksModel> Tasks = new List<TasksModel>()
{
    new TasksModel { Id = "Task 1", Title = "BLAZ-29001", Status = "Open", Summary = "Analyze the new requirements gathered from the customer.", Assignee = "Nancy Davloio" },
    new TasksModel { Id = "Task 2", Title = "BLAZ-29002", Status = "InProgress", Summary = "Improve application performance", Assignee = "Andrew Fuller" },
    new TasksModel { Id = "Task 3", Title = "BLAZ-29003", Status = "Open", Summary = "Arrange a web meeting with the customer to get new requirements.", Assignee = "Janet Leverling" },
    new TasksModel { Id = "Task 4", Title = "BLAZ-29004", Status = "InProgress", Summary = "Fix the issues reported in the IE browser.", Assignee = "Janet Leverling" },
    new TasksModel { Id = "Task 5", Title = "BLAZ-29005", Status = "Review", Summary = "Fix the issues reported by the customer.", Assignee = "Steven walker" },
    new TasksModel { Id = "Task 6", Title = "BLAZ-29006", Status = "Review", Summary = "Fix the issues reported in Safari browser.", Assignee = "Nancy Davloio" },
    new TasksModel { Id = "Task 7", Title = "BLAZ-29007", Status = "Close", Summary = "Test the application in the IE browser.", Assignee = "Margaret hamilt" },
    new TasksModel { Id = "Task 8", Title = "BLAZ-29008", Status = "Validate", Summary = "Validate the issues reported by the customer.", Assignee = "Steven walker" },
    new TasksModel { Id = "Task 9", Title = "BLAZ-29009", Status = "Open", Summary = "Show the retrieved data from the server in grid control.", Assignee = "Margaret hamilt" },
    new TasksModel { Id = "Task 10", Title = "BLAZ-29010", Status = "InProgress", Summary = "Fix cannot open user’s default database SQL error.", Assignee = "Janet Leverling" },
    new TasksModel { Id = "Task 11", Title = "BLAZ-29011", Status = "Review", Summary = "Fix the issues reported in data binding.", Assignee = "Janet Leverling" },
    new TasksModel { Id = "Task 12", Title = "BLAZ-29012", Status = "Close", Summary = "Analyze SQL server 2008 connection.", Assignee = "Andrew Fuller" },
    new TasksModel { Id = "Task 13", Title = "BLAZ-29013", Status = "Validate", Summary = "Validate databinding issues.", Assignee = "Margaret hamilt" },
    new TasksModel { Id = "Task 14", Title = "BLAZ-29014", Status = "Close", Summary = "Analyze grid control.", Assignee = "Margaret hamilt" },
    new TasksModel { Id = "Task 15", Title = "BLAZ-29015", Status = "Close", Summary = "Stored procedure for initial data binding of the grid.", Assignee = "Steven walker" },
    new TasksModel { Id = "Task 16", Title = "BLAZ-29016", Status = "Close", Summary = "Analyze stored procedures.", Assignee = "Janet Leverling" },
    new TasksModel { Id = "Task 17", Title = "BLAZ-29017", Status = "Validate", Summary = "Validate editing issues.", Assignee = "Nancy Davloio" },
    new TasksModel { Id = "Task 18", Title = "BLAZ-29018", Status = "Review", Summary = "Test editing functionality.", Assignee = "Nancy Davloio" },
    new TasksModel { Id = "Task 19", Title = "BLAZ-29019", Status = "Open", Summary = "Enhance editing functionality.", Assignee = "Andrew Fuller" },
    new TasksModel { Id = "Task 20", Title = "BLAZ-29020", Status = "InProgress", Summary = "Improve the performance of the editing functionality.", Assignee = "Nancy Davloio" },
    new TasksModel { Id = "Task 21", Title = "BLAZ-29021", Status = "Open", Summary = "Arrange web meeting with the customer to show editing demo.", Assignee = "Steven walker" },
    new TasksModel { Id = "Task 22", Title = "BLAZ-29022", Status = "Review", Summary = "Fix the editing issues reported by the customer.", Assignee = "Janet Leverling" },
    new TasksModel { Id = "Task 23", Title = "BLAZ-29023", Status = "Testing", Summary = "Fix the issues reported by the customer.", Assignee = "Steven walker" },
    new TasksModel { Id = "Task 24", Title = "BLAZ-29024", Status = "Testing", Summary = "Fix the issues reported in Safari browser.", Assignee = "Nancy Davloio" },
    new TasksModel { Id = "Task 25", Title = "BLAZ-29025", Status = "Testing", Summary = "Fix the issues reported in data binding.", Assignee = "Janet Leverling" },
    new TasksModel { Id = "Task 26", Title = "BLAZ-29026", Status = "Testing", Summary = "Test editing functionality.", Assignee = "Nancy Davloio" },
    new TasksModel { Id = "Task 27", Title = "BLAZ-29027", Status = "Testing", Summary = "Test editing feature in the IE browser.", Assignee = "Janet Leverling" }
};
}

Output be like the below.

kanban

Dialog Template

Using the dialog template, you can render your own form fields with dialog by using the Template.

@using Syncfusion.Blazor.Kanban
@using Syncfusion.Blazor.Inputs
@using Syncfusion.Blazor.DropDowns

<button class="e-btn" @onclick="@ShowAddCardDialog">Add New Card</button>

<SfKanban @ref="KanbanRef" KeyField="Status" DataSource="Tasks">
<KanbanColumns>
    <KanbanColumn HeaderText="Backlog" KeyField="@(new List<string>() {"Open"})"></KanbanColumn>
    <KanbanColumn HeaderText="In Progress" KeyField="@(new List<string>() {"InProgress"})"></KanbanColumn>
    <KanbanColumn HeaderText="Testing" KeyField="@(new List<string>() {"Testing"})"></KanbanColumn>
    <KanbanColumn HeaderText="Done" KeyField="@(new List<string>() {"Close"})"></KanbanColumn>
</KanbanColumns>
<KanbanCardSettings HeaderField="Id" ContentField="Summary"></KanbanCardSettings>
<KanbanDialogSettings>
    <Template>
        @{
            TasksModel data = (TasksModel)context;
            <table>
                <tbody>
                    <tr>
                        <td class="e-label">ID</td>
                        <td>
                            <SfTextBox CssClass="e-field" Value="@data.Id" Enabled="false"></SfTextBox>
                        </td>
                    </tr>
                    <tr>
                        <td class="e-label">Status</td>
                        <td>
                            <SfDropDownList @ref="StatusRef" TValue="string" TItem="DropDownModel" CssClass="e-field" DataSource="@StatusData" Value="@data.Status">
                                <DropDownListFieldSettings Text="Value" Value="Value"></DropDownListFieldSettings>
                            </SfDropDownList>
                        </td>
                    </tr>
                    <tr>
                        <td class="e-label">Assignee</td>
                        <td>
                            <SfDropDownList @ref="AssigneeRef" TValue="string" TItem="DropDownModel" CssClass="e-field" DataSource="@AssigneeData" Value="@data.Assignee">
                                <DropDownListFieldSettings Text="Value" Value="Value"></DropDownListFieldSettings>
                            </SfDropDownList>
                        </td>
                    </tr>
                    <tr>
                        <td class="e-label">Summary</td>
                        <td>
                            <SfTextBox @ref="SummaryRef" CssClass="e-field" Multiline="true" @bind-Value="@data.Summary"></SfTextBox>
                        </td>
                    </tr>
                </tbody>
            </table>
        }
    </Template>
</KanbanDialogSettings>
</SfKanban>

@code {
SfKanban<TasksModel> KanbanRef;
SfDropDownList<string, DropDownModel> StatusRef;
SfDropDownList<string, DropDownModel> AssigneeRef;
SfTextBox SummaryRef;

private List<DropDownModel> StatusData = new List<DropDownModel>()
{
    new DropDownModel { Id = 0, Value = "Open" },
    new DropDownModel { Id = 1, Value = "InProgress" },
    new DropDownModel { Id = 2, Value = "Testing" },
    new DropDownModel { Id = 3, Value = "Close" }
};

private List<DropDownModel> AssigneeData = new List<DropDownModel>()
{
    new DropDownModel { Id = 0, Value = "Nancy Davloio" },
    new DropDownModel { Id = 1, Value = "Andrew Fuller" },
    new DropDownModel { Id = 2, Value = "Janet Leverling" },
    new DropDownModel { Id = 3, Value = "Steven walker" },
    new DropDownModel { Id = 4, Value = "Robert King" },
    new DropDownModel { Id = 5, Value = "Margaret hamilt" },
    new DropDownModel { Id = 6, Value = "Michael Suyama" }
};

private void ShowAddCardDialog()
{
    TasksModel data = new TasksModel()
    {
        Id = (this.Tasks.Count() + 1).ToString(),
        Title = "",
        Summary = "",
        Status = "Open",
        Assignee = "Nancy Davloio"
    };
    this.KanbanRef.OpenDialog(CurrentAction.Add, data);
}

private class DropDownModel
{
    public int Id { get; set; }
    public string Value { get; set; }
}
public class TasksModel
{
    public string Id { get; set; }
    public string Title { get; set; }
    public string Status { get; set; }
    public string Summary { get; set; }
    public string Assignee { get; set; }
}

public List<TasksModel> Tasks = new List<TasksModel>()
{
    new TasksModel { Id = "Task 1", Title = "BLAZ-29001", Status = "Open", Summary = "Analyze the new requirements gathered from the customer.", Assignee = "Nancy Davloio" },
    new TasksModel { Id = "Task 2", Title = "BLAZ-29002", Status = "InProgress", Summary = "Improve application performance", Assignee = "Andrew Fuller" },
    new TasksModel { Id = "Task 3", Title = "BLAZ-29003", Status = "Open", Summary = "Arrange a web meeting with the customer to get new requirements.", Assignee = "Janet Leverling" },
    new TasksModel { Id = "Task 4", Title = "BLAZ-29004", Status = "InProgress", Summary = "Fix the issues reported in the IE browser.", Assignee = "Janet Leverling" },
    new TasksModel { Id = "Task 5", Title = "BLAZ-29005", Status = "Review", Summary = "Fix the issues reported by the customer.", Assignee = "Steven walker" },
    new TasksModel { Id = "Task 6", Title = "BLAZ-29006", Status = "Review", Summary = "Fix the issues reported in Safari browser.", Assignee = "Nancy Davloio" },
    new TasksModel { Id = "Task 7", Title = "BLAZ-29007", Status = "Close", Summary = "Test the application in the IE browser.", Assignee = "Margaret hamilt" },
    new TasksModel { Id = "Task 8", Title = "BLAZ-29008", Status = "Validate", Summary = "Validate the issues reported by the customer.", Assignee = "Steven walker" },
    new TasksModel { Id = "Task 9", Title = "BLAZ-29009", Status = "Open", Summary = "Show the retrieved data from the server in grid control.", Assignee = "Margaret hamilt" },
    new TasksModel { Id = "Task 10", Title = "BLAZ-29010", Status = "InProgress", Summary = "Fix cannot open user’s default database SQL error.", Assignee = "Janet Leverling" },
    new TasksModel { Id = "Task 11", Title = "BLAZ-29011", Status = "Review", Summary = "Fix the issues reported in data binding.", Assignee = "Janet Leverling" },
    new TasksModel { Id = "Task 12", Title = "BLAZ-29012", Status = "Close", Summary = "Analyze SQL server 2008 connection.", Assignee = "Andrew Fuller" },
    new TasksModel { Id = "Task 13", Title = "BLAZ-29013", Status = "Validate", Summary = "Validate databinding issues.", Assignee = "Margaret hamilt" },
    new TasksModel { Id = "Task 14", Title = "BLAZ-29014", Status = "Close", Summary = "Analyze grid control.", Assignee = "Margaret hamilt" },
    new TasksModel { Id = "Task 15", Title = "BLAZ-29015", Status = "Close", Summary = "Stored procedure for initial data binding of the grid.", Assignee = "Steven walker" },
    new TasksModel { Id = "Task 16", Title = "BLAZ-29016", Status = "Close", Summary = "Analyze stored procedures.", Assignee = "Janet Leverling" },
    new TasksModel { Id = "Task 17", Title = "BLAZ-29017", Status = "Validate", Summary = "Validate editing issues.", Assignee = "Nancy Davloio" },
    new TasksModel { Id = "Task 18", Title = "BLAZ-29018", Status = "Review", Summary = "Test editing functionality.", Assignee = "Nancy Davloio" },
    new TasksModel { Id = "Task 19", Title = "BLAZ-29019", Status = "Open", Summary = "Enhance editing functionality.", Assignee = "Andrew Fuller" },
    new TasksModel { Id = "Task 20", Title = "BLAZ-29020", Status = "InProgress", Summary = "Improve the performance of the editing functionality.", Assignee = "Nancy Davloio" },
    new TasksModel { Id = "Task 21", Title = "BLAZ-29021", Status = "Open", Summary = "Arrange web meeting with the customer to show editing demo.", Assignee = "Steven walker" },
    new TasksModel { Id = "Task 22", Title = "BLAZ-29022", Status = "Review", Summary = "Fix the editing issues reported by the customer.", Assignee = "Janet Leverling" },
    new TasksModel { Id = "Task 23", Title = "BLAZ-29023", Status = "Testing", Summary = "Fix the issues reported by the customer.", Assignee = "Steven walker" },
    new TasksModel { Id = "Task 24", Title = "BLAZ-29024", Status = "Testing", Summary = "Fix the issues reported in Safari browser.", Assignee = "Nancy Davloio" },
    new TasksModel { Id = "Task 25", Title = "BLAZ-29025", Status = "Testing", Summary = "Fix the issues reported in data binding.", Assignee = "Janet Leverling" },
    new TasksModel { Id = "Task 26", Title = "BLAZ-29026", Status = "Testing", Summary = "Test editing functionality.", Assignee = "Nancy Davloio" },
    new TasksModel { Id = "Task 27", Title = "BLAZ-29027", Status = "Testing", Summary = "Test editing feature in the IE browser.", Assignee = "Janet Leverling" }
};
}

Output be like the below.

kanban

Prevent Dialog

The Kanban allows to prevent to open a dialog on card double-click by enabling args.Cancel in DialogOpen event.

@using Syncfusion.Blazor.Kanban

<SfKanban TValue="TasksModel" KeyField="Status" DataSource="Tasks">
<KanbanColumns>
    <KanbanColumn HeaderText="Backlog" KeyField="@(new List<string>() {"Open"})"></KanbanColumn>
    <KanbanColumn HeaderText="In Progress" KeyField="@(new List<string>() {"InProgress"})"></KanbanColumn>
    <KanbanColumn HeaderText="Testing" KeyField="@(new List<string>() {"Testing"})"></KanbanColumn>
    <KanbanColumn HeaderText="Done" KeyField="@(new List<string>() {"Close"})"></KanbanColumn>
</KanbanColumns>
<KanbanCardSettings HeaderField="Id" ContentField="Summary"></KanbanCardSettings>
<KanbanEvents TValue="TasksModel" DialogOpen="@OnDialogOpen"></KanbanEvents>
</SfKanban>

@code {
public class TasksModel
{
    public string Id { get; set; }
    public string Title { get; set; }
    public string Status { get; set; }
    public string Summary { get; set; }
    public string Assignee { get; set; }
}

public List<TasksModel> Tasks = new List<TasksModel>()
{
    new TasksModel { Id = "Task 1", Title = "BLAZ-29001", Status = "Open", Summary = "Analyze the new requirements gathered from the customer.", Assignee = "Nancy Davloio" },
    new TasksModel { Id = "Task 2", Title = "BLAZ-29002", Status = "InProgress", Summary = "Improve application performance", Assignee = "Andrew Fuller" },
    new TasksModel { Id = "Task 3", Title = "BLAZ-29003", Status = "Open", Summary = "Arrange a web meeting with the customer to get new requirements.", Assignee = "Janet Leverling" },
    new TasksModel { Id = "Task 4", Title = "BLAZ-29004", Status = "InProgress", Summary = "Fix the issues reported in the IE browser.", Assignee = "Janet Leverling" },
    new TasksModel { Id = "Task 5", Title = "BLAZ-29005", Status = "Review", Summary = "Fix the issues reported by the customer.", Assignee = "Steven walker" },
    new TasksModel { Id = "Task 6", Title = "BLAZ-29006", Status = "Review", Summary = "Fix the issues reported in Safari browser.", Assignee = "Nancy Davloio" },
    new TasksModel { Id = "Task 7", Title = "BLAZ-29007", Status = "Close", Summary = "Test the application in the IE browser.", Assignee = "Margaret hamilt" },
    new TasksModel { Id = "Task 8", Title = "BLAZ-29008", Status = "Validate", Summary = "Validate the issues reported by the customer.", Assignee = "Steven walker" },
    new TasksModel { Id = "Task 9", Title = "BLAZ-29009", Status = "Open", Summary = "Show the retrieved data from the server in grid control.", Assignee = "Margaret hamilt" },
    new TasksModel { Id = "Task 10", Title = "BLAZ-29010", Status = "InProgress", Summary = "Fix cannot open user’s default database SQL error.", Assignee = "Janet Leverling" },
    new TasksModel { Id = "Task 11", Title = "BLAZ-29011", Status = "Review", Summary = "Fix the issues reported in data binding.", Assignee = "Janet Leverling" },
    new TasksModel { Id = "Task 12", Title = "BLAZ-29012", Status = "Close", Summary = "Analyze SQL server 2008 connection.", Assignee = "Andrew Fuller" },
    new TasksModel { Id = "Task 13", Title = "BLAZ-29013", Status = "Validate", Summary = "Validate databinding issues.", Assignee = "Margaret hamilt" },
    new TasksModel { Id = "Task 14", Title = "BLAZ-29014", Status = "Close", Summary = "Analyze grid control.", Assignee = "Margaret hamilt" },
    new TasksModel { Id = "Task 15", Title = "BLAZ-29015", Status = "Close", Summary = "Stored procedure for initial data binding of the grid.", Assignee = "Steven walker" },
    new TasksModel { Id = "Task 16", Title = "BLAZ-29016", Status = "Close", Summary = "Analyze stored procedures.", Assignee = "Janet Leverling" },
    new TasksModel { Id = "Task 17", Title = "BLAZ-29017", Status = "Validate", Summary = "Validate editing issues.", Assignee = "Nancy Davloio" },
    new TasksModel { Id = "Task 18", Title = "BLAZ-29018", Status = "Review", Summary = "Test editing functionality.", Assignee = "Nancy Davloio" },
    new TasksModel { Id = "Task 19", Title = "BLAZ-29019", Status = "Open", Summary = "Enhance editing functionality.", Assignee = "Andrew Fuller" },
    new TasksModel { Id = "Task 20", Title = "BLAZ-29020", Status = "InProgress", Summary = "Improve the performance of the editing functionality.", Assignee = "Nancy Davloio" },
    new TasksModel { Id = "Task 21", Title = "BLAZ-29021", Status = "Open", Summary = "Arrange web meeting with the customer to show editing demo.", Assignee = "Steven walker" },
    new TasksModel { Id = "Task 22", Title = "BLAZ-29022", Status = "Review", Summary = "Fix the editing issues reported by the customer.", Assignee = "Janet Leverling" },
    new TasksModel { Id = "Task 23", Title = "BLAZ-29023", Status = "Testing", Summary = "Fix the issues reported by the customer.", Assignee = "Steven walker" },
    new TasksModel { Id = "Task 24", Title = "BLAZ-29024", Status = "Testing", Summary = "Fix the issues reported in Safari browser.", Assignee = "Nancy Davloio" },
    new TasksModel { Id = "Task 25", Title = "BLAZ-29025", Status = "Testing", Summary = "Fix the issues reported in data binding.", Assignee = "Janet Leverling" },
    new TasksModel { Id = "Task 26", Title = "BLAZ-29026", Status = "Testing", Summary = "Test editing functionality.", Assignee = "Nancy Davloio" },
    new TasksModel { Id = "Task 27", Title = "BLAZ-29027", Status = "Testing", Summary = "Test editing feature in the IE browser.", Assignee = "Janet Leverling" }
};

private void OnDialogOpen(DialogOpenEventArgs<TasksModel> args)
{
    args.Cancel = true;
}
}

Contents

Default Dialog
Dialog Template
Prevent Dialog

Contents

Default Dialog
Dialog Template
Prevent Dialog

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