仅在编辑单击时将 ReadOnly 属性 设置为 devexpress 网格 (MVC) 的列

Question

我的部分视图中有一个 devexpress 网格，

网格的每一行都有一个添加、更新和删除按钮。

单击特定行的更新时，会弹出一个包含网格所有列的表单。

现在我想将其中一列的只读 属性 设置为 true，这是我通过 column.ReadOnly = true;

完成的

但是这样做的目的是始终将列设置为只读，即即使在新点击期间也是如此。

因为我只想要这个只读 属性 只有在编辑点击期间。

这是我的devexpress网格代码

@{

    var grid = Html.DevExpress().GridView(settings =>
    {
        settings.Name = "GridViewDuration";
        settings.CallbackRouteValues = new { Controller = "DurationMaster", Action = "GridViewDurationPartial" };

        settings.SettingsEditing.AddNewRowRouteValues = new { Controller = "MyController", Action = "MyControllerAction1" };
        settings.SettingsEditing.UpdateRowRouteValues = new { Controller = "MyController", Action = "MyControllerAction2" };
        settings.SettingsEditing.DeleteRowRouteValues = new { Controller = "MyController", Action = "MyControllerAction3" };
        settings.SettingsEditing.Mode = GridViewEditingMode.EditFormAndDisplayRow;
        settings.SettingsBehavior.ConfirmDelete = true;

        settings.CommandColumn.Visible = true;
        settings.CommandColumn.ShowNewButton = true;
        settings.CommandColumn.ShowDeleteButton = true;
        settings.CommandColumn.ShowEditButton = true;

        settings.KeyFieldName = "DurationId";

        settings.SettingsPager.Visible = true;
        settings.SettingsPager.PageSize = 20;
        settings.Settings.ShowGroupPanel = true;
        settings.Settings.ShowFilterRow = true;
        settings.SettingsBehavior.AllowSelectByRowClick = false;
        settings.Columns.Add(column =>
        {
            column.FieldName = "Column1";
            column.ReadOnly = true;
            column.Width = 20;

        });
        settings.Columns.Add(column =>
        {
            column.FieldName = "Column2";
            column.Caption = "xyz";
            column.ColumnType = MVCxGridViewColumnType.ComboBox;
            column.Width = 250;

            var comboBoxProperties = column.PropertiesEdit as ComboBoxProperties;
            comboBoxProperties.DataSource = PMC.Web.Controllers.DurationMasterController.getSelectList("0", "MyAction4");
            comboBoxProperties.TextField = "Text";
            comboBoxProperties.ValueField = "Value";
            comboBoxProperties.ValueType = typeof(int);
            comboBoxProperties.ValidationSettings.RequiredField.IsRequired = true;


        });
        settings.InitNewRow = (sender, e) =>
        {
            e.NewValues["ColumnId"] = 0;
        };
        settings.Columns.Add("ColumnName");
        settings.Columns.Add("Description");
        //settings.Columns.Add("DisplayName");
        settings.Columns.Add(column =>
    {
        column.Caption = "FromDate";
        column.FieldName = "FromDate";
        column.ColumnType = MVCxGridViewColumnType.DateEdit;
        column.ReadOnly = true;
        var DateEditProperties = column.PropertiesEdit as DateEditProperties;
        column.CellStyle.Wrap = DefaultBoolean.False;
    });



    settings.Columns.Add(column =>
    {
        column.Caption = "ToDate";
        column.FieldName = "ToDate";

        column.ColumnType = MVCxGridViewColumnType.DateEdit;
        var DateEditProperties = column.PropertiesEdit as DateEditProperties;
        column.CellStyle.Wrap = DefaultBoolean.False;
    });
    });
    if (ViewData["EditError"] != null)
    {
        grid.SetEditErrorText((string)ViewData["EditError"]);
    }

}
@grid.Bind(Model).GetHtml()  

这是我的网格在初始加载时的样子。

当点击更新进行编辑时

Answer 1

如果我很了解你，我认为你需要使用编辑模板来解决你描述的问题。

在编辑模板操作中，您可以通过检查 属性 值 ASPxGridView.IsNewRowEditing

来检查新行是否处于编辑状态

请看下面的例子。

    settings.Columns.Add(col =>
    {
        col.FieldName = "Id";
        col.Caption = "Id";

        col.SetEditItemTemplateContent(e =>
        {
            if (e.Grid.IsNewRowEditing)
            {
                // your code here
            }
            else
            {
                // your code here
            }
        });
    });

请查看以下链接了解更多详情

MVCxGridViewColumn.SetEditItemTemplateContent https://documentation.devexpress.com/#AspNet/DevExpressWebMvcMVCxGridViewColumn_SetEditItemTemplateContenttopic(68Z8MA)

ASPxGridView.IsNewRowEditing https://documentation.devexpress.com/#AspNet/DevExpressWebASPxGridView_IsNewRowEditingtopic