参数类型'Edm.DateTime'和'Edm.String'与此操作不兼容

时间:2013-05-14 09:45:00

标签: c# asp.net telerik

我正在尝试过滤网格中同一列中的两个不同的(数据选择器)。我尝试用这两个字段来命令。整个过滤过程在后面的代码中进行,到目前为止,它正在为网格中的其他字段工作。但对于一个人,我得到一个奇怪的例外:

  

{“参数类型'Edm.DateTime'和'Edm.String'与此操作不兼容。   接近大于或等于表达式,第6行,第15列。“}

在数据库中,该字段是日期时间,它是单列

我的代码:

                    <telerik:GridBoundColumn DataField="EntryDate" DataType="System.DateTime" DataFormatString="{0:dd/MM/yyyy}" FilterControlAltText="Filter EntryDate column"
                        HeaderText="Date" SortExpression="EntryDate" UniqueName="EntryDate" FilterControlWidth="50px">
                        <FilterTemplate>
                            From
                            <telerik:RadDatePicker ID="FromOrderDatePicker" runat="server" Width="100px" AutoPostBack="true"
                                OnSelectedDateChanged="FromOrderDatePicker_SelectedDateChanged" OnPreRender="FromOrderDatePicker_PreRender" />
                            to
                            <telerik:RadDatePicker ID="ToOrderDatePicker" runat="server" Width="100px" AutoPostBack="true"
                                OnSelectedDateChanged="ToOrderDatePicker_SelectedDateChanged" OnPreRender="ToOrderDatePicker_PreRender" />

                        </FilterTemplate>
                    </telerik:GridBoundColumn> 

代码背后:

     protected void FromOrderDatePicker_SelectedDateChanged(object sender, Telerik.Web.UI.Calendar.SelectedDateChangedEventArgs e)
            {
                RadDatePicker picker = sender as RadDatePicker;
                ViewState["FromDatePicker"] = DateTimeToString(picker.SelectedDate.Value);

                ExpressionChanged();
            }
            protected void FromOrderDatePicker_PreRender(object sender, EventArgs e)
            {
                if (ViewState["FromDatePicker"] != null)
                {
                    RadDatePicker picker = sender as RadDatePicker;
                    picker.SelectedDate = StringToDateTime(ViewState["FromDatePicker"].ToString());
                }
            }


  private string DateTimeToString(DateTime dt)
    {
        return dt.Month + "/" + dt.Day + "/" + dt.Year;
    }
    private DateTime StringToDateTime(string s)
    {
        string[] dts = s.Split('/');
        DateTime dt = new DateTime(Int32.Parse(dts[2]), Int32.Parse(dts[0]), Int32.Parse(dts[1]));
        return dt;
    }

发布代码(对于toDatePicker)

是多余的
 private void ExpressionChanged()
    {
        //reset
        TimeReportGrid.MasterTableView.FilterExpression = null;
        TimeReportGrid.MasterTableView.Rebind();


        if (ViewState["FromDatePicker"] != null &&
            ViewState["ToDatePicker"] != null &&
            ViewState["FromDatePicker"].ToString() != "" &&
            ViewState["ToDatePicker"].ToString() != "")
        {
            TimeReportGrid.MasterTableView.FilterExpression += "(it.EntryDate >= '" + ViewState["FromDatePicker"].ToString() + "') AND (it.EntryDate <= '" + ViewState["ToDatePicker"].ToString() + "')";
        }

随时询问是否有任何问题

感谢您的帮助和快速回答!

1 个答案:

答案 0 :(得分:1)

我的问题的答案非常简单我只需要声明EntryDate是DATETIME,看起来像那样

TimeReportGrid.MasterTableView.FilterExpression += "(it.EntryDate>= DATETIME '" + ViewState["FromDatePicker"].ToString() + " 00:00') AND (it.EntryDate<= DATETIME '" + ViewState["ToDatePicker"].ToString() + " 23:59')";

很简单,但我需要一些时间才能得到它

随意询问是否有任何问题