How to set radzendropdown's default value?

Radzen Studio Blazor WebAssembly
1

Hi i have a radzendropdown component in blazor webassembly and im trying to set its default value to the first item in the list of strings i have.

<RadzenGridColumn TItem="Server" Property="Status" Title="Status">
                    <EditTemplate Context="server">
                        <RadzenDropDown @bind-Value="server.Status" Data="@statusList" Style="width:100%" Name="Status" />
                        <RadzenRequiredValidator Text="Status is required" Component="Status" Popup="true"/>
                    </EditTemplate>
</RadzenGridColumn>

Here is my list of strings:

List<string> statusList = new List<string>() { "Active", "Paused", "Acknowledged", "Failure" };

I just would like to know how i can set the default value of the radzendropdown to "Active".

THank you

2

The selected value of the dropdown is determined by its Value property - in your case @bind-Value="server.Status".

3

Thank you for that clarification.

I set the @bind-Value to something like "@statusList.First()" but its not working.
Can you advise me on what it should be changed to to get the first value in my statusList

4

Try with just Value. When using @bind-Value you can't use method invocations - @bind is for two-way binding.

1 Like
5

Same problem, but still different:

<RadzenDropDown Data=@datalist @bind-Value=@data.ga_id AllowClear="false" Placeholder="Wähle aus ..."style="width: 100%;" TextProperty="Name" ValueProperty="ga_id" Name="Ga_Id" Change="@(args => OnChange(args, "Ga_ID"))" />

here the drop-down list is filled with a list of objects where Name-property gives the entry in the dropdown list but the ga_id-property is used.

Problem seems that the preselect doesnt happen. In practical example - the id of a sample is 57 but the entry 57 is not selected in the dropdown. The dropdown always displays the placeholder

I suspect that the preselect tries to match the given id to the displayed entry which is the Name for the id 57, instead of matching the ValueProperty

6

If that was true non of our examples would work.

7