Best practice for show localized display name for MetaTable and MetaColumn

Question

User-323784514 posted

Hi, I'm setting the DisplayName in database model's Metatable, and it can be shown in my ASP.NET DYNAMIC DATA website, like this:

[ScaffoldTable(true)]
[MetadataType(typeof(ItemMetadata))]
public class ItemModel
{
    public Guid Id { get; set; }
    ...
    ...
}

[DisplayName("ThisIsMyItemModelDisplayName")]
class ItemMetadata
{
    [ScaffoldColumn(true)]
    [Display(Order = 1)]
    public Guid Id;

    [ScaffoldColumn(true)]
    [Display(Name = "ThisIsItemName", Order = 3)]
    public string ItemName;

    ...
}

it's good, the website can reflect and show the string I've put in, but now my website need to support different locale languages, so I created a customized Attribute to allow pass in a RESOURCE string key, 

[AttributeUsage(AttributeTargets.Class | AttributeTargets.Field, AllowMultiple = false)]
public class LocalizeDisplayName : Attribute
{
    public LocalizeDisplayName(string localizedStringKey)
    {
        this.StringKey = localizedStringKey;
    }

    public string StringKey { get; }
}

use it like this:

[LocalizeDisplayName("DynamicDataWebSite_Model_Item_LocalizedDisplayName")]
class ItemMetadata
{
    [ScaffoldColumn(true)]
    [Display(Order = 1)]
    public Guid Id;

    [ScaffoldColumn(true)]
    [LocalizeDisplayName(Name = "DynamicDataWebSite_Model_Item_Column_ItemName", Order = 3)]
    public string ItemName;

    ...
}

and then in website pages code which for showing this model, I can resolve the localized string key from a RESOURCE file, then get the localized string:

var target = metaTable.Attributes[typeof(LocalizeDisplayName)];
var localizedStr = Resources.Strings.ResourceManager.GetString(((LocalizeDisplayName)target).StringKey, CultureInfo.CurrentCulture);

 above code is easy to inject to most code in aspx.cs, but for those GridView and etc., most of its binding logical are behind the scence, like this is a sample code from Visual Studio Dynamic data website template for showing a list of values for a model:

<asp:GridView ID="GridView1" runat="server" DataSourceID="GridDataSource" EnablePersistedSelection="true"
        AllowPaging="True" AllowSorting="True" CssClass="DDGridView"
        RowStyle-CssClass="td" HeaderStyle-CssClass="th" CellPadding="6">
        <Columns>
            <asp:TemplateField>
                <ItemTemplate>
                    <asp:LinkButton runat="server" CommandName="Edit" Text="Edit" OnClientClick='return confirm("Super admin, Are you sure you want to edit this item?");' />&nbsp;
                    <asp:LinkButton runat="server" CommandName="Delete" Text="Delete"
                                OnClientClick='return confirm("Super admin, Are you sure you want to delete this item?");' />&nbsp;
                    <asp:DynamicHyperLink runat="server" Text="Details" />
                </ItemTemplate>
            </asp:TemplateField>
        </Columns>

        <PagerStyle CssClass="DDFooter" />
        <PagerTemplate>
            <asp:GridViewPager runat="server" />
        </PagerTemplate>
        <EmptyDataTemplate>
            There are currently no items in this table.
        </EmptyDataTemplate>
</asp:GridView>

for here, I want the header row showing the localized string which marked in Metatable's MetaColumn, like the column `ItemName` which marked with RESOURCE KEY

DynamicDataWebSite_Model_Item_Column_ItemName

 so How I can achieve this by a generic way that suits all types of models?

Answer 1

User-330204900 posted

I would extend the MetaTable and MeltaColumn classes and then use those in my application 

i.e.

public class LocalizedMetaModel : MetaModel

and

public class LocalizedSecureMetaTable : MetaTable

and

public class LocalizedSecureMetaColumn : MetaColumn

etc.

then override the DisplayName property get the LocalizeDisplayNameAttribute if it exists and return that localised name.

This is a simplistic approach and does not take into account the clients local, which you may need to acquire from  the client and pass to the Table/Column via a function during the Session staturup.

Answer 2

User-335504541 posted

Hi shawn.shao,

Since you could get the localized string in behind code, you could also set the header in behind code.

For example:

 GridView1.HeaderRow.Cells[0].Text = localizedStr;

Best Regards,

Billy