方法一：

代码

<asp:TemplateField HeaderText="检查日期">           
            <ItemTemplate>
                <%# Eval("InspectionDate", "{0:yyyy-MM-dd}")%>               
            </ItemTemplate>
        </asp:TemplateField>

方法二：

代码

<asp:TemplateField HeaderText="检查日期">           
            <ItemTemplate>
                <%# string.Format("{0:yyyy-MM-dd}", Eval("InspectionDate")%>           
            </ItemTemplate>
        </asp:TemplateField>

方法三：

先在TemplateField中放一个Label控件

代码

<asp:TemplateField HeaderText="检查日期">           
            <ItemTemplate>                
                <asp:Label ID="LabelInspectionDate" runat="server" Text=""></asp:Label>
            </ItemTemplate>
        </asp:TemplateField>

然后在cs中写OnRowDataBound事件

代码

 protected void xxxxx_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        DataRowView drv = (DataRowView)e.Row.DataItem;
        
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            if (e.Row.FindControl("LabelInspectionDate") != null)
            {
                Label labelInspectionDate = (Label)e.Row.FindControl("LabelInspectionDate");
                labelInspectionDate.Text = string.Format("{0:yyyy-MM-dd}",drv["InspectionDate"]);
            } 
        }
    }

方法五：
此方法和方法四有点相似，只是引用InsusDateTimeUtility自定义类别

代码

protected void xxxxx_RowDataBound(object sender, GridViewRowEventArgs e)
    {
    InsusDateTimeUtility  objInsusDateTimeUtility = new   InsusDateTimeUtility();    
     DataRowView drv = (DataRowView)e.Row.DataItem;
        
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            if (e.Row.FindControl("LabelInspectionDate") != null)
            {
                Label labelInspectionDate = (Label)e.Row.FindControl("LabelInspectionDate");
                labelInspectionDate.Text = objInsusDateTimeUtility.GetDateTime(drv["InspectionDate"], "yyyy-MM-dd");
            } 
        }
    }