Datapager not working on filter

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Hi,

I am having problems with datapager. I created a listview then placed a button which filters a datasource using SelectCommand. When I click the button, first time, everything works perfectly but once I click any of the datapager buttons it resets the filter.

I am fairly new the asp .net and I don't know where to start digging.

A bit lost.

This is what my datapager layout looks like:

XML

<asp:DataPager ID="DataPager1" runat="server" >
    <Fields>
        <asp:NextPreviousPagerField ButtonType="Button" ShowFirstPageButton="True"
            ShowLastPageButton="True" />
    </Fields>
</asp:DataPager>

Thanks.

Posted 5-Apr-12 1:13am

JimAce

Updated 5-Apr-12 1:14am

v2

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Mohamed Mitwalli · Accepted Answer · 2012-04-05T01:43:00

Hi ,
Try this example

C#

protected void ListView1_PagePropertiesChanging(object sender, PagePropertiesChangingEventArgs e)
  {
             SqlDataSource1.FilterExpression = "Item_name like '%trr%'";      
  }

ASP.NET

<div>
        <asp:listview id="ListView1" runat="server" datakeynames="item_code" xmlns:asp="#unknown">
            DataSourceID="SqlDataSource1">
    
            <itemtemplate>
                <li style="background-color: #DCDCDC;color: #000000;">item_code:
                    <asp:label id="item_codeLabel" runat="server" text="<%# Eval("item_code") %>" />
                    <br />
                    Item_name:
                    <asp:label id="Item_nameLabel" runat="server" text="<%# Eval("Item_name") %>" />
                    <br />
                    brand:
                    <asp:label id="brandLabel" runat="server" text="<%# Eval("brand") %>" />                   
                    <br />
                    price:
                    <asp:label id="priceLabel" runat="server" text="<%# Eval("price") %>" />
                    <br />
                    Material:
                    <asp:label id="MaterialLabel" runat="server" text="<%# Eval("Material") %>" />
                    <br />
                    tax:
                    <asp:label id="taxLabel" runat="server" text="<%# Eval("tax") %>" />
                    <br />
                </li>
            </itemtemplate>
            <layouttemplate>
                <ul id="itemPlaceholderContainer"  runat="server">
                    style="font-family: Verdana, Arial, Helvetica, sans-serif;">
                    <li  runat="server" id="itemPlaceholder" />
                </ul>
                <div style="text-align: center;background-color: #CCCCCC;font-family: Verdana, Arial, Helvetica, sans-serif;color: #000000;">
                </div>
            </layouttemplate>
            
        </asp:listview>
        <asp:sqldatasource id="SqlDataSource1" runat="server" xmlns:asp="#unknown">
            ConnectionString="<%$ ConnectionStrings:testConnectionString %>" 
            SelectCommand="SELECT * FROM [Items]"></asp:sqldatasource>
        <asp:datapager id="DataPager1" runat="server" pagedcontrolid="ListView1" pagesize="4" xmlns:asp="#unknown">
            <fields>
           <asp:NextPreviousPagerField ButtonType="Button" ShowFirstPageButton="True" 
                    ShowNextPageButton="False" ShowPreviousPageButton="False" />
                <asp:NumericPagerField />
                <asp:NextPreviousPagerField ButtonType="Button" ShowLastPageButton="True" 
                    ShowNextPageButton="False" ShowPreviousPageButton="False" />     
            </fields>
                
        </asp:datapager>
    </div>

Best Regards
M.Mitwalli