自定义日期列 Telerik 网格的过滤器选项

Question

我正在使用 Telerik 网格。我需要对网格中的所有列应用过滤器。目前我正在使用以下代码自定义过滤器选项。通过使用以下代码，我删除了所有列的某些项目。但是，对于日期列，任何人都可以告诉我在网格中进行过滤的可能选项是什么以及如何自定义这些过滤选项吗？

代码背后

    protected void RGVTest_Init(object sender, EventArgs e)
    {

        GridFilterMenu menu = RGVTest.FilterMenu;
        int i = 0;
        while (i < menu.Items.Count)
        {
            if (menu.Items[i].Text == "Between" ||
                menu.Items[i].Text == "NotBetween")
            {
                menu.Items.RemoveAt(i);
            }
            else
            {
                i++;
            }
        }
    }

*ASPX:*

<telerik:RadGrid ID="RGVTest" runat="server" Skin="Vista" AllowPaging="True"
            AllowFilteringByColumn="true" AllowSorting="true" GridLines="None" OnItemCommand="RGVTest_ItemCommand"
            PageSize="10" OnNeedDataSource="RGVTest_NeedDataSource" OnItemDataBound="RGVTest_ItemDataBound"
            OnInit="RGVTest_Init">
            <GroupingSettings CaseSensitive="false" />
            <PagerStyle Mode="NextPrevAndNumeric" AlwaysVisible="true" />
            <MasterTableView AutoGenerateColumns="False" CellSpacing="-1" >
                <NoRecordsTemplate>
                    <div style="color: red">
                        No Records to display!
                    </div>
                </NoRecordsTemplate>
                <Columns>

                    <telerik:GridTemplateColumn DataField="SSN" ReadOnly="True" HeaderText="SSN" UniqueName="SSN"
                        SortExpression="SSN">
                        <ItemTemplate>
                            <asp:Label ID="LblSSN" runat="server" Text='<%#Eval("SSN") %>'></asp:Label>
                        </ItemTemplate>
                        <ItemStyle HorizontalAlign="Left" Width="5%" />
                    </telerik:GridTemplateColumn>

                    <telerik:GridTemplateColumn DataField="Date" HeaderText="Date" UniqueName="Date"
                        SortExpression="Date">
                        <ItemTemplate>
                            <asp:Label ID="LblDate" runat="server" Text='<%#Eval("Date","{0:MM/dd/yyyy}") %>'></asp:Label>
                        </ItemTemplate>
                        <ItemStyle HorizontalAlign="Left" Width="4%" />
                    </telerik:GridTemplateColumn>

                </Columns>
            </MasterTableView>
        </telerik:RadGrid>

Answer 1

你确实喜欢这样：

 protected void RadGrid1_ItemCommand(object source, GridCommandEventArgs e)  
 {  
     if (e.CommandName == RadGrid.FilterCommandName)  
     {  
         Pair filterPair = e.CommandArgument as Pair;  
         string columnName = Convert.ToString(filterPair.Second);  
         if (columnName == "CreationDate")  
         {  
            e.Canceled = true;  
             string date = ((TextBox)((GridFilteringItem)e.Item)[Convert.ToString(filterPair.Second)].Controls          [0]).Text;  
             DateTime startDate = Convert.ToDateTime(date);  
             DateTime endDate = startDate.AddDays(1);  
             string newFilter = "('" + startDate.ToString("MM/dd/yyyy") + "' <= [CreationDate] AND [CreationDate] <= '"         + endDate.ToString("MM/dd/yyyy") + "')";   
             GridBoundColumn dateColumn = (GridBoundColumn)e.Item.OwnerTableView.GetColumnSafe(columnName);  
             dateColumn.CurrentFilterValue = startDate.ToString("MM/dd/yyyy");  
            RadGrid1.MasterTableView.FilterExpression = newFilter;  
             RadGrid1.Rebind();  
         }  
     }  
 }  

Answer 2

尝试这样

function FilterMenuShowing(sender, eventArgs)   
   {     
       if (eventArgs.get_column().get_uniqueName() == "IsPostable")      
       {              
           var menu = eventArgs.get_menu();   
           var items = menu._itemData;   

           var i = 0;   

           while (i < items.length)     
           {     
               if (items[i].value != "NoFilter" && items[i].value != "EqualTo" && items[i].value != "NotEqualTo")     
               {     
                   var item = menu._findItemByValue(items[i].value);   
                   if (item != null)   
                       item._element.style.display="none";   
               }     
               i++;     
           }
       }
       else
       {
           var menu = eventArgs.get_menu();   
           var items = menu._itemData;   

           var i = 0;
           while (i < items.length)     
           {     
               var item = menu._findItemByValue(items[i].value);   
               if (item != null)   
                   item._element.style.display="";   
               i++;     
           }
       }     

   }  

在您的网格上添加-

<ClientSettings>  
    <ClientEvents OnFilterMenuShowing="filterMenuShowing" />  
</ClientSettings>

查看详情这里

Answer 3

You can try the way its done below for "order date" column.

protected void RadGrid1_ItemCommand(object source, Telerik.Web.UI.GridCommandEventArgs e)
{
    if (e.CommandName == RadGrid.FilterCommandName &&
    ((Pair)e.CommandArgument).Second.ToString() == "OrderDate"
     &&
    ((Pair)e.CommandArgument).First != "NoFilter")
    {
        e.Canceled = true;
        GridFilteringItem filterItem = (GridFilteringItem)e.Item;
        string currentPattern = (filterItem[((Pair)e.CommandArgument).Second.ToString()].Controls[0] as TextBox).Text;
        string filterPattern = "";
        string filterPatternAssist = "";
        if (currentPattern.IndexOf(" ") != -1)
        {
            currentPattern = currentPattern.Replace(" ", "/");
        }
        string[] vals = currentPattern.Split("/".ToCharArray());
        string filterOption = (e.CommandArgument as Pair).First.ToString();
        if (filterOption != "IsNull" && filterOption != "NotIsNull")
        {
            if (vals.Length > 3)
            {
                filterPatternAssist = vals[4] + "/" + vals[3] + "/" + vals[5];
            }
            filterPattern = vals[1] + "/" + vals[0] + "/" + vals[2];
        }
        GridBoundColumn dateColumn = (GridBoundColumn)e.Item.OwnerTableView.GetColumnSafe("OrderDate");
        switch (filterOption)
        {
            case "EqualTo":
                filterPattern = "[OrderDate] = '" + filterPattern + "'";
                dateColumn.CurrentFilterFunction = GridKnownFunction.EqualTo;
                break;
            case "NotEqualTo":
                filterPattern = "Not [OrderDate] = '" + filterPattern + "'";
                dateColumn.CurrentFilterFunction = GridKnownFunction.NotEqualTo;
                break;
            case "GreaterThan":
                filterPattern = "[OrderDate] > '" + filterPattern + "'";
                dateColumn.CurrentFilterFunction = GridKnownFunction.GreaterThan;
                break;
            case "LessThan":
                filterPattern = "[OrderDate] < '" + filterPattern + "'";
                dateColumn.CurrentFilterFunction = GridKnownFunction.LessThan;
                break;
            case "GreaterThanOrEqualTo":
                filterPattern = "[OrderDate] >= '" + filterPattern + "'";
                dateColumn.CurrentFilterFunction = GridKnownFunction.GreaterThanOrEqualTo;
                break;
            case "LessThanOrEqualTo":
                filterPattern = "[OrderDate] <= '" + filterPattern + "'";
                dateColumn.CurrentFilterFunction = GridKnownFunction.LessThanOrEqualTo;
                break;
            case "Between":
                filterPattern = "'" + filterPattern + "' <= [OrderDate] AND [OrderDate] <= '" + filterPatternAssist + "'";
                dateColumn.CurrentFilterFunction = GridKnownFunction.Between;
                break;
            case "NotBetween":
                filterPattern = "[OrderDate] <= '" + filterPattern + "' OR [OrderDate] >= '" + filterPatternAssist + "'";
                dateColumn.CurrentFilterFunction = GridKnownFunction.NotBetween;
                break;
            case "IsNull":
                break;
            case "NotIsNull":
                break;
        }
        foreach (GridColumn column in RadGrid1.MasterTableView.Columns)
        {
            if (column.UniqueName != "OrderDate")
            {
                column.CurrentFilterFunction = GridKnownFunction.NoFilter;
                column.CurrentFilterValue = string.Empty;
            }
        }
        Session["filterPattern"] = filterPattern;
        dateColumn.CurrentFilterValue = currentPattern;
        filterItem.OwnerTableView.Rebind();
    }
    //Add more conditional checks for commands here if necessary
    else if (e.CommandName != RadGrid.SortCommandName && e.CommandName != RadGrid.PageCommandName)
    {
        Session["filterPattern"] = null;
        GridBoundColumn dateColumn = (GridBoundColumn)e.Item.OwnerTableView.GetColumnSafe("OrderDate");
        dateColumn.CurrentFilterFunction = GridKnownFunction.NoFilter;
        dateColumn.CurrentFilterValue = string.Empty;
    }
}