DevExpress AspxGridView 的另一个问题 :)
上下文：
AspxDropDown一个DropDownWindowTemplateDropDownItemTemplate，我添加了一个GridView和一个启用的分页/排序/过滤ObjectDataSourceObjectDataSource，我应该为数据源设置过滤器参数。那里的过滤器参数应该来自FilterRow的AspxGridView（最好使用AspxGridView.FilterExpression属性）。问题：该AspxGridView.FilterExpression属性未设置为正确的值（由用户设置）。
有没有人找到一个很好的实现我在这里尝试做的事情？
谢谢一堆。
:)
我终于设法解决了这个问题。
不是一个好的解决方案，但仍然是一种解决方法。
所以..“解决方案”是在每个 AfterPerformCallback 事件上对网格进行数据绑定。
void grid_AfterPerformCallback(object sender, ASPxGridViewAfterPerformCallbackEventArgs e)
{
((DevExpress.Web.ASPxGridView.ASPxGridView)sender).DataBind();
}
正如我所说，这不是一个好的解决方案。
每个 DevExpress 的答案是正确的 FilterExpression 在数据绑定时更新。
他们声称在 BeforePerformDataSelect 中，您将看到正确的值。
我有 1 个连接到正确执行此操作的 SqlDataSource 的网格，而另一个未正确执行此操作的网格...所以您的里程可能会有所不同。
我的第二个网格没有遵守这个原则，所以我在 AfterPerformCallback() 中集成了另一个人的概念重新绑定。诀窍是防止双重查询。这段代码还演示了如何劫持 devexpress 来构建自己的 SQL。显然，这是来自我的工作项目，所以请发挥您的想象力，我拥有您没有的功能......
这是相关的html和代码：
<dxwgv:ASPxGridView ID="grid" runat="server"
KeyFieldName="OrderID"
OnAfterPerformCallback="grid_AfterPerformCallback"
OnBeforePerformDataSelect="grid_BeforePerformDataSelect"
AutoGenerateColumns="True"
SettingsDetail-AllowOnlyOneMasterRowExpanded="true"
Settings-ShowFilterRow="true"
Settings-ShowFilterRowMenu="True"
SettingsBehavior-AllowSelectSingleRowOnly="true"
OnDetailRowExpandedChanged="Grid_DetailRowExpandedChanged"
Styles-Cell-Cursor="pointer"
SettingsBehavior-EnableRowHotTrack="true"
CssFilePath="~/App_Themes/Office2010Blue/{0}/styles.css"
CssPostfix="Office2010Blue"
SettingsPager-PageSize="<%# this._GridRowsPerPage %>"
SettingsBehavior-ColumnResizeMode="Control"
SettingsCustomizationWindow-PopupHorizontalAlign="WindowCenter"
SettingsCustomizationWindow-PopupVerticalAlign="WindowCenter"
SettingsCustomizationWindow-Width="300px"
Settings-ShowHorizontalScrollBar="true"
Width="<%# this._GetWidth() %>"
SettingsPager-AlwaysShowPager="true"
SettingsCookies-Enabled="true"
>
<Columns>
<dxwgv:GridViewDataColumn FieldName="PriorityType" Visible="false" />
<dxwgv:GridViewDataColumn FieldName="basePatientID" Caption="PTID" />
<dxwgv:GridViewDataColumn FieldName="FirstName" />
<dxwgv:GridViewDataColumn FieldName="LastName" />
<dxwgv:GridViewDataColumn FieldName="Employer" />
<dxwgv:GridViewDataColumn FieldName="Insurer" />
<dxwgv:GridViewDataColumn FieldName="ClaimJurisdiction" Caption="Jurisdiction" />
<dxwgv:GridViewDataColumn FieldName="DOB" Visible="false" />
<dxwgv:GridViewDataColumn FieldName="DateOfInjury" Caption="DOI" Visible="false" />
<dxwgv:GridViewDataColumn FieldName="PostalCode" Caption="ZipCode" Visible="false" />
<dxwgv:GridViewDataColumn FieldName="FirstCareDate" Visible="false" />
<dxwgv:GridViewDataColumn FieldName="LastCareDate" Visible="false" />
<dxwgv:GridViewDataColumn FieldName="IntakeStatus" />
<dxwgv:GridViewDataColumn FieldName="SchedulingNeeded" />
<dxwgv:GridViewDataColumn FieldName="InitialReferralDate" Caption="Date Assigned" />
<dxwgv:GridViewDataColumn FieldName="Orders_UpdatedOn" Caption="Last Follow-up" />
<dxwgv:GridViewDataColumn FieldName="RequestTypes" Caption="Service" Visible="false" />
<dxwgv:GridViewDataColumn FieldName="FacilityGroups" Caption="Provider" Visible="false" />
<dxwgv:GridViewDataColumn FieldName="ICD9Codes" Visible="false" />
<dxwgv:GridViewDataColumn FieldName="CPTCodes" Visible="false" />
<dxwgv:GridViewDataColumn FieldName="OrderCategory" Caption="Source" />
<dxwgv:GridViewDataColumn FieldName="CaseCoordinator" Visible="false" />
<dxwgv:GridViewDataColumn FieldName="SchedulingTier" Visible="false" Caption="Tier" />
<dxwgv:GridViewDataColumn FieldName="LockRequest_UserName" Visible="true" Caption="InUseBy" />
</Columns>
<Styles CssFilePath="~/App_Themes/Office2010Blue/{0}/styles.css" CssPostfix="Office2010Blue">
<Header ImageSpacing="5px" SortingImageSpacing="5px">
</Header>
<LoadingPanel ImageSpacing="10px">
</LoadingPanel>
</Styles>
<ImagesFilterControl>
<LoadingPanel Url="~/App_Themes/Office2010Blue/Editors/Loading.gif">
</LoadingPanel>
</ImagesFilterControl>
<Images SpriteCssFilePath="~/App_Themes/Office2010Blue/{0}/sprite.css">
<LoadingPanelOnStatusBar Url="~/App_Themes/Office2010Blue/GridView/gvLoadingOnStatusBar.gif">
</LoadingPanelOnStatusBar>
<LoadingPanel Url="~/App_Themes/Office2010Blue/GridView/Loading.gif">
</LoadingPanel>
</Images>
<ClientSideEvents ContextMenu="grid_ShowContextMenu" />
<ClientSideEvents BeginCallback="function(s, e) { OnBeginCallback(s,e); }" />
<ClientSideEvents EndCallback="function(s, e) { OnEndCallback(s,e); }" />
<StylesEditors>
<ProgressBar Height="25px">
</ProgressBar>
</StylesEditors>
</dxwgv:ASPxGridView>
<asp:SqlDataSource ID="GridSource" runat="server"></asp:SqlDataSource>
这是 BeforePerformDataSelect 的事件处理程序：
私人布尔_DataBindingCompleted = false;
protected void grid_BeforePerformDataSelect(object sender, EventArgs e)
{
if (_DataBindCompleted) Grid_PerformDataSelect(sender, e);
}
protected override void Grid_PerformDataSelect(bool ClearSelection)
{
if (ClearSelection) this.grid.Selection.UnselectAll();
GridSource.ProviderName = System.Configuration.ConfigurationManager.ConnectionStrings["mysql"].ProviderName;
GridSource.ConnectionString = System.Configuration.ConfigurationManager.ConnectionStrings["mysql"].ConnectionString;
SetupSearch();
//if (this.FilterContext.Count > 0 || !string.IsNullOrEmpty(grid.FilterExpression))
//{
string FilterSQL = DevExpressUtils.GetMySQLFilterExpression(grid);
string OrderBySQL = DevExpressUtils.GetSQLOrderByExpression(grid, "OrderID");
//FilterSQL = FilterSQL.Replace("[PatientID]", "vwPatients."+ Patient.PRIMARYKEY);
if (Utils.GetAppSettingBool("MYSQL"))
{
GridSource.SelectCommand = this.MP.CurrentUser.GetEOSHeaderSQL(this.FilterContext, FilterSQL, "");
}
else
{
GridSource.SelectCommand = "";
}
}
protected override void Grid_PerformDataSelect(object sender, EventArgs e)
{
bool IsFromParent = this.ClientID.StartsWith(this.MP.GridCallback);
if (grid.Visible && (!this.Page.IsCallback ||
((this.MP.GridCallback == this.grid.ClientID && (this.MP.GridCallbackCommand != "SHOWDETAILROW" || this.IsDetailGrid))
|| (this.MP.GridCallbackCommand == "SHOWDETAILROW" && IsFromParent)
)
)
)
{
Grid_PerformDataSelect(false);
}
}
protected void grid_AfterPerformCallback(object sender, ASPxGridViewAfterPerformCallbackEventArgs e)
{
_DataBindCompleted = true;
((DevExpress.Web.ASPxGridView.ASPxGridView)sender).DataBind();
}
protected void Page_Init(object sender, EventArgs e)
{
grid.DataSource = GridSource;
}
protected new void Page_Load(object sender, EventArgs e)
{
this.grid.ClientInstanceName = this.grid.ClientID;
if (!this.IsPostBack)
{
_DataBindCompleted = true;
grid.DataBind();
}
}