Infragistics Typeahead建议

Question

我在typeahead suggest中使用infragistics webcombo。

问题是我可以使用xmlReq访问WebCombo1_InitializeDataSource，但数据在webcombo中不可见。

下面是我使用的一段代码：

<igcmbo:WebCombo ID="WebCombo1" runat="server" EnableXmlHTTP="True" Editable="True"
                            ComboTypeAhead="Suggest">
                            <Columns>                              
                            <ClientSideEvents EditKeyUp="WebCombo1_EditKeyUp">
                            </ClientSideEvents>
                        </igcmbo:WebCombo>                            

Javascript函数：

function WebCombo1_EditKeyUp(webComboId,newValue,keyCode) 
   {
       var oWebCombo1=igcmbo_getComboById(webComboId)

        xmlReq = null;
        if(window.XMLHttpRequest) xmlReq = new XMLHttpRequest();
            else if(window.ActiveXObject) xmlReq = new ActiveXObject("Microsoft.XMLHTTP");                          

        var search=newValue&&newValue.length&&newValue.length>0?newValue:"";                        
        xmlReq.open("GET","ActivityManagement.aspx?searchString="+search,true);    
        xmlReq.send(null);
   }

代码隐藏：

void WebCombo1_InitializeDataSource(object sender, Infragistics.WebUI.WebCombo.WebComboEventArgs e)
{
    string str = "";
    if (this.Request.QueryString["searchString"] != null)
    {
        str = this.Request.QueryString["searchString"].ToUpper();
    }
    else str = "00";
    DataTable dtProducts = OperationsDataAccess.GetProductList(str);
    string rowFilter = "DeleteFlag = 0";
    dtProducts.DefaultView.RowFilter = rowFilter;
    WebCombo1.DataSource = dtProducts.DefaultView;
    WebCombo1.DataTextField = "Name";
    WebCombo1.DataValueField = "Id";
    WebCombo1.DataBind();
    WebCombo1.DropDownLayout.RowSelectors = RowSelectors.No;        
}

Answer 1

只需设置webcombo的以下属性即可实现此目的

EnableXmlHTTP="True" 
Editable="True"
ComboTypeAhead="Suggest"

并将该网页组合与该网页组合的InitializeDataSource事件中的数据源进行绑定，当page.ispostback为真时，还将该网页组合绑定到该page_load中。

在你的存储过程中实现搜索逻辑，例如select * from employee where emp_name like 'a%'。

这将在您键入数据时检索记录。