Question 135224 in Visual Studio Code Question posted in
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Visual Studio Code – How to set decimal? or string on Field property in Blazor DevExpress DataGridColumn?

I need to set a Field with a decimal? value, if doesn’t have value it should show the "-".

I tried use this code:

Field="@(nameof(this.DataDTO.EventDefaultValue > 0 ? this.DataDTO.EventDefaultValue.ToString("F2") : "-"))"/>

But doesn’t is possible convert, the Visual Studio show the error

enter image description here

I’m using the Blazor, together with DevExpress DxDataGridColumn component.

How can I to resolve this point? Someone can help me?

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2

Answers


  1. Chosen as BEST ANSWER
    0

    As it is the comment above the use of nameof() was wrong. I removed the nameof() and used DisplayTemplate component to set a field in my grid and pass a data of context.

    As I needed to make a condition verification the DisplayTemplate was a good solution.

    The code was this below:

     <DxDataGridColumn Caption="@Localizer["Valor Default"]"
                              Field="eventDefaultValue">
                              <DisplayTemplate>
                                  @{
                                    var summary = context as CostEventTypeSummaryDTO;
                                    if (summary.EventDefaultValue != null && summary.EventDefaultValue > 0)
                                    {
                                        <span>@summary.EventDefaultValue.Value.ToString("F2")</span>
                                    }
                                    else { <span>-</span> }
                                  }
                              </DisplayTemplate>
            </DxDataGridColumn>

    And this result was this below:

    enter image description here


  2. 0

    nameof() method is used to get the name of a method, or a class for example. But you use it with some logic inside, so it will hit an error.

    The parameter Field is generally use – for example in the Telerik Library’s components – to target a field of a class. I am pretty sure it is exactly the same here, you wanna give the name of the field of your class that the column you set is reffered to. For example Field="@nameof(DataDTO.EventDefaultValue) will tell to Blazor "this column will display the EventDefaultValue field of the object".

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