ASP.NET：GridView背景色在自定义事件中不会更改

Question

我试图根据线程的状态更改asp.net中的网格视图表的背景色，该线程启动事件，从该事件中启动以下程序（已调试并确保已被调用）：< / p>

protected void updateGridView(UpdateGridViewArgs e)
{
    if (e.Status == "Complete")
    {
        this.dgv_Display.Rows[e.Index].BackColor = Color.Green;
        this.dgv_Display.Rows[e.Index].ForeColor = Color.Yellow;
    }
    else if (e.Status == "Error")
    {
        this.dgv_Display.Rows[e.Index].BackColor = Color.Red;
        this.dgv_Display.Rows[e.Index].ForeColor = Color.Yellow;
    }
    else if (e.Status == "Ongoing")
    {
        this.dgv_Display.Rows[e.Index].BackColor = Color.Yellow;
        this.dgv_Display.Rows[e.Index].ForeColor = Color.Black;

        if (e.Index > 5)
        {
            //DisplayJobs.Invoke(new Action(() => DisplayJobs.FirstDisplayedScrollingRowIndex = Index - 5));
        }
    }

}

但是，gridview表不会更改。

启动时

this.dgv_Display.Rows[0].BackColor = Color.Green;

在按钮单击事件中，该行会更改颜色，请告知。

事件触发脚本：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace CustomEvents
{
    public delegate void UpdateGridViewHandler(UpdateGridViewArgs e);

    public class UpdateGridViewArgs : EventArgs
    {
        public string Status;
        public int Index;
        public UpdateGridViewArgs(string status, int index)
        {
            this.Status = status;
            this.Index = index;
        }

    }
}

调用触发器：

FleetMonitor.UpdateDataTable(new UpdateGridViewArgs("Ongoing", index));

触发事件处理设置：

 public static event UpdateGridViewHandler _gridViewEventHandler;

protected void Page_Load(object sender, EventArgs e)
        {
            ConfigFile.Initialize("C:/IIS/App_Data/FleetMonitor.config");
            Limits.Initialize();
            populateGridView();
            populate_cmb_Times();
            _gridViewEventHandler += new UpdateGridViewHandler(updateGridView);
        }
        
public static void UpdateDataTable(UpdateGridViewArgs e)
        {
            if (_gridViewEventHandler != null)
            {
                _gridViewEventHandler(e);
            }
        }
        
   

触发事件处理：

protected void updateGridView(UpdateGridViewArgs e)
        {
            if (e.Status == "Complete")
            {
                this.dgv_Display.Rows[e.Index].BackColor = Color.Green;
                this.dgv_Display.Rows[e.Index].ForeColor = Color.Yellow;
            }
            else if (e.Status == "Error")
            {
                this.dgv_Display.Rows[e.Index].BackColor = Color.Red;
                this.dgv_Display.Rows[e.Index].ForeColor = Color.Yellow;
            }
            else if (e.Status == "Ongoing")
            {
                this.dgv_Display.Rows[e.Index].BackColor = Color.Yellow;
                this.dgv_Display.Rows[e.Index].ForeColor = Color.Black;
                this.dgv_Display.UpdateRow(e.Index, false);
                if (e.Index > 5)
                {
                    //DisplayJobs.Invoke(new Action(() => DisplayJobs.FirstDisplayedScrollingRowIndex = Index - 5));
                }
            }

        }