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GridView在 ASP.NET MVC 4 项目中使用 DevExpress 扩展 v12.2。

GridView'sDataSource设置为一个对象,该System.Data.DataTable对象是通过在 SQL Server 2008 R2 数据库上运行自定义 SQL 查询获得的。

我绑定到 a 的原因DataTable是运行 SQL 查询的结果每次都会有可变数量的列,因此结果的架构将是流动的。因此,我不能绑定到特定的 ViewModel 或一个,IEnumerable<MyPOCO>因为为此我必须事先有一个固定的结构。

我抬头一看DataTable,令人惊讶的是,它不是IEnumerable. 它是一个IListSource. 但我离题了

我正在使用以下代码来处理行编辑、删除和新行创建:

@Html.DevExpress().GridView(settings =>
    {
    settings.Name = "gvStrings";

    settings.CallbackRouteValues = new { Controller = "Strings", Action = "StringsPartial" };

    // Paging related stuff: not shown here 
    // because it's not relevant to the question

    foreach (DataColumn column in Model.Columns)
    {
        if ((string.Compare(column.ColumnName, "Foo", true) == 0) ||
            (string.Compare(column.ColumnName, "Bar", true) == 0))
        {
            continue;
        }
        else if (string.Compare(column.ColumnName, "GarId", true) == 0)
        {
            var categoryColumn = settings.Columns.Add(column.ColumnName, "Gar");

            // and so on...
        }
        else
        {
            settings.Columns.Add(column.ColumnName);
        }
    }

    settings.KeyFieldName = "FooId";

    settings.SettingsEditing.AddNewRowRouteValues = new { Controller = "Foo", Action = "CreateNew" };
    settings.SettingsEditing.UpdateRowRouteValues = new { Controller = "Foo", Action = "Edit" };
    settings.SettingsEditing.DeleteRowRouteValues = new { Controller = "Foo", Action = "Delete" };

    settings.SettingsEditing.Mode = GridViewEditingMode.Inline;

    settings.SettingsBehavior.ConfirmDelete = true;

    settings.CommandColumn.Visible = true;
    settings.CommandColumn.NewButton.Visible = true;
    settings.CommandColumn.EditButton.Visible = true;
    settings.CommandColumn.UpdateButton.Visible = true;
    settings.CommandColumn.DeleteButton.Visible = true;

}).Bind(Model).GetHtml()

我无法确定从客户端发送的数据绑定到服务器上的对象类型。

我尝试绑定到System.Data.DataRow这样的对象,但是模型绑定器无法绑定到DataRow对象,因为DataRow没有无参数的默认构造函数。

[HttpPost]
public ActionResult CreateNew(DataRow row)
{
    System.Diagnostics.Debugger.Break();

    // The model binder can't bind to System.Data.DataRow because
    // DataRow does not have a parameterless, default ctor, so 
    // I receive an exception that says something like, 
    // "No parameterless default constructor was found on this object."

    return Content("Hello, there!");
}

然后,我尝试System.object在签名中使用并调用它GetType()以返回运行时类型,但它System.object仅作为运行时类型返回。请看下面的代码:

[HttpPost]
public ActionResult CreateNew(object row)
{
    System.Diagnostics.Debugger.Break();

    System.Diagnostics.Debug.Print(row.GetType().ToString());

    return Content("Hello, there!");
}

然后,我尝试dynamic像这样绑定到一个对象,但我无法反映它的属性。

[HttpPost]
public ActionResult CreateNew(dynamic row)
{
    System.Diagnostics.Debugger.Break();

    foreach (PropertyDescriptor prop in TypeDescriptor.GetProperties(row))
    {
        System.Diagnostics.Debug.Print(prop.Name);
    }

    return Content("Hello, there!");
}

请帮忙。我应该将数据绑定到什么对象?

4

1 回答 1

1

使用 DevExpress KB 中的 DataTable Model 线程检查GridView 编辑值。

于 2013-09-16T10:35:04.460 回答