AspxGridView ComboBoxComlum列数据联动

第1步:

页面放置AspxGridView控件, 设置列ComboBox1, ComboBox2列, 拟通过ComboBox1列更新联动ComboBox2列.

两个数据列均为"ComboBoxColumn"类型的列.

第2步:客户端源码:

<!--客户端源码-->
<dx:GridViewDataComboBoxColumn Caption="ComboBox1" FieldName="box1Column" VisibleIndex="0"
Width="200px">
<PropertiesComboBox ValueType="System.String">
 />
 
<dx:GridViewDataComboBoxColumn Caption="ComboBox2" FieldName="box2Column" VisibleIndex="0"
Width="200px">
<PropertiesComboBox ValueType="System.String">
<ClientSideEvents SelectedIndexChanged="function(s, e) {
onSelectedIndexChanged(s,e);
}" />
 
<script language="javascript" type="text/javascript">
function onSelectedIndexChanged(s, e) {
grvList.GetEditor("box2Column").PerformCallback(grvDetailList.GetEditor("box1Column").GetValue());
}
</script>

 第3步:服务器端源码

//编辑状态控件初始化事件方法
protected void grvList_CellEditorInitialize(object sender, ASPxGridViewEditorEventArgs e)
        {
            ASPxGridView grid = sender as ASPxGridView;
 
            if (!grid.IsEditing) return;
            switch (e.Column.FieldName)
            {
 
                //初始化Combox1数据
                case "ComboBox1":
                    DevExpress.Web.ASPxEditors.ASPxComboBox box1 = e.Editor as DevExpress.Web.ASPxEditors.ASPxComboBox;
                    DataTable dtBox1 = GetBox1Data();
                    box1.DataSource = dtBox1;
                    box1.ValueField = "valueField";
                    box1.TextField = "textField";
                    box1.DataBind();
                    box1.SelectedItem = box1.Items.FindByValue(e.Value);
                    break;
 
                //初始化box2值
                case "ComboBox2":
                    DevExpress.Web.ASPxEditors.ASPxComboBox box2 = e.Editor as DevExpress.Web.ASPxEditors.ASPxComboBox;
                    long box1_value = Convert.ToInt64(grid.GetRowValuesByKeyValue(e.KeyValue, "ComboBox2"));　　//取当前box1中的值.
                    DataTable dtBox2 = GetBox2Data(box1_value);
                    box2.DataSource = dtBox2;
                    box2.ValueField = "valueField";
                    box2.TextField = "textField";
                    box2.DataBind();
                    box2.SelectedItem = box2.Items.FindByValue(e.Value);
 
                    //注册ComboBox2 Callback事件,客户端ComboBox1 客户端 SelectItemChanged事件调用
                    box2.Callback += new DevExpress.Web.ASPxClasses.CallbackEventHandlerBase(grvList_ComboBox2_Callback);
                    break;
            }
        }

//ComboBox2 Callback方法
        protected void grvList_ComboBox2_Callback(object sender, CallbackEventArgsBase e)
        {
            if (string.IsNullOrEmpty(e.Parameter)) return;
 
            DevExpress.Web.ASPxEditors.ASPxComboBox box2 = sender as DevExpress.Web.ASPxEditors.ASPxComboBox;
 
            DataTable dtBox2 = GetBox2Data(box1_value);
 
            box2.DataSource = dtBox2;
            box2.ValueField = "valueField";
            box2.TextField = "textField";
            box2.DataBind();
 
            box2.SelectedItem = box.Items.FindByValue(e.Parameter);
 
        }

将显示的代码转换成文本形式显示通过这个事件方法.

 protected void grvDetailList_CustomColumnDisplayText(object sender, ASPxGridViewColumnDisplayTextEventArgs e)
        {
           switch (e.Column.FieldName)
            {
                case "box1Column":
                    e.DisplayText = GetBox1TextByValue(Convert.ToInt64(e.Value));
                    break;
 
                case "box2Column":
                    e.DisplayText = GetBox2TextByValue(Convert.ToInt64(e.Value));
                    break;
 
            }
        }