Question

我正在使用telerik网格。我需要为网格中的所有列应用过滤器。 Currenly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，我将删除所有列的某些项目。但是，对于任何一个日期列，请告诉我在网格中过滤的可能选项是什么以及如何自定义这些过滤选项？

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

试试这个

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++;     
           }
       }     

   }

在你的网格上添加 -

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

查看详情here

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;
    }
}

自定义日期列telerik网格的过滤器选项

3 个答案: