1
在任何人回答这个之前，我发现了我的代码中的错误，并在下面发布了我的答案。我将这个问题留下来（除非有人真正关心）作为一个警示故事，以便始终绑定您的冒险GridView。使用ASP.NET WebForms的控制在奇数方式为什么我的GridView切换到编辑模式？
前言/背景
我（AB）。我知道。
我正在研究一个应用程序，希望学生列出他们参加过的一些学校活动。学生可以添加多行，并且 - 仅用于一般工作流程原因 - 我决定将显示的GridView他们的“已保存”条目来自他们添加/更新其活动的“详细信息”区域。
编辑/更新件工作得很好。我可以添加新项目，使用与我的课程相关的烘焙验证（这是所有额外的span标记具有class="error"属性显示）。我真的想做出这个傻瓜证明，所以他们点击添加新活动的按钮也会验证并将他们的信息添加到GridView（提供的项目通过验证），清除详细信息控件，并且表现正常。
问题描述
我开始这方面的一些基本的测试，结果发现，如果我编辑活动，打破了该类中的验证规则中的一个（或多个），然后单击“添加新活动“按钮，我的GridView将该行从EditItemTemplate恢复为正常的ItemTemplate。
据我所知，我的EditIndex从来没有偏离我仍在编辑的行。实际上，如果我触发另一个回传，GridView会显示正确的EditIndex！
我试过重新设置EditIndex并将我的e.Cancel = true转换为return声明。没有任何工作。考虑到EditIndex's值通过多次回传保持不变，我必须认为这里有些奇怪的事情发生。
我已经发布了下面的标记和C＃代码。两者都非常荒谬 - 我重构了我的功能 - 所以我提前道歉，并感谢任何勇敢的（或无聊的）提供建议的人。
此外，如果有人愿意看到这种情况发生，而不是通过我的标记/代码阅读（或除此之外），我可以提供屏幕截图。
GridView
<asp:GridView ID="schoolActivities" AutoGenerateColumns="false" runat="server">
<Columns>
<asp:TemplateField>
<ItemTemplate>
<asp:Button ID="edit" CommandName="Edit" runat="server" Text="Edit" />
</ItemTemplate>
<EditItemTemplate></EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<HeaderTemplate></HeaderTemplate>
<ItemTemplate>
<%# DataBinder.GetPropertyValue(Container.DataItem, "Details") %>
</ItemTemplate>
<EditItemTemplate>Editing...</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<HeaderTemplate>
Months per Year
</HeaderTemplate>
<ItemTemplate><%# DataBinder.GetPropertyValue(Container.DataItem, "MonthsPerYear") %></ItemTemplate>
<EditItemTemplate></EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<HeaderTemplate>Date</HeaderTemplate>
<ItemTemplate>
<%# DataBinder.GetPropertyValue(Container.DataItem, "ActivityDate") %>
</ItemTemplate>
<EditItemTemplate></EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<HeaderTemplate>
Total Hours Outside Class Time
</HeaderTemplate>
<ItemTemplate>
<%# DataBinder.GetPropertyValue(Container.DataItem, "TotalHours") %>
</ItemTemplate>
<EditItemTemplate></EditItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
“详细资料” 部分
<br />
<button type="button" id="newActivity" runat="server">Add New Activity</button>
<br />
<fieldset id="schoolActivityFields" runat="server" visible="false">
<legend>Activity</legend>
<span>Details:</span>
<span>
<textarea id="schoolActivityDetails" class="schoolActivityDetails" runat="server"></textarea>
<br />
<span id="schoolActivityDetailsError" class="error" runat="server"></span>
</span>
<br />
<span>Months per Year:</span>
<span>
<select id="schoolActivityMonthsPerYear" runat="server">
<option>1</option>
<option>2</option>
<option>3</option>
<option>4</option>
<option>5</option>
<option>6</option>
<option>7</option>
<option>8</option>
<option>9</option>
<option>10</option>
<option>11</option>
<option>12</option>
</select>
</span>
<span id="schoolActivityMonthsPerYearError" class="error" runat="server"></span>
<br />
<span>Date:</span>
<span>
<select id="schoolActivityDate" runat="server">
<option>2005</option>
<option>2006</option>
<option>2007</option>
<option>2008</option>
<option>2009</option>
<option>2010</option>
<option>2011</option>
<option>2012</option>
</select>
</span>
<span id="schoolActivityDateError" class="error" runat="server"></span>
<br />
<span>Total Hours:</span>
<span>
<input type="text" id="schoolActivityTotalHours" runat="server" />
</span>
<span id="schoolActivityTotalHoursError" class="error" runat="server"></span>
<br />
<button type="button" id="addActivity" runat="server">Add Activity</button>
<button type="button" id="updateActivity" runat="server" visible="false">Update Activity</button>
<button type="button" id="cancelEditActivity" runat="server" visible="false">Cancel Editing Activity</button>
<button type="button" id="deleteActivity" runat="server" visible="false">Delete Activity</button>
</fieldset>
的C＃的长度滔天，但对于任何勇敢的灵魂：
void addActivity_ServerClick(object sender, EventArgs e)
{
AddSchoolActivity();
}
private bool AddSchoolActivity()
{
ResetSchoolActivityErrors();
SchoolActivity activityToAdd = GetSchoolActivity();
try
{
SessionApplication.SchoolActivities.Add(activityToAdd);
BindSchoolActivities();
ResetSchoolActivityFields();
HideSchoolActivityFields();
}
catch (BrokenRuleException)
{
MapSchoolActivityErrors(activityToAdd);
return false;
}
return true;
}
void updateActivity_ServerClick(object sender, EventArgs e)
{
UpdateSchoolActivity();
}
private bool UpdateSchoolActivity()
{
ResetSchoolActivityErrors();
SchoolActivity activityToUpdate = GetSchoolActivity();
try
{
SessionApplication.SchoolActivities[schoolActivities.EditIndex] = activityToUpdate;
ResetSchoolActivitiesEditIndex();
BindSchoolActivities();
ResetSchoolActivityFields();
HideSchoolActivityFields();
}
catch (BrokenRuleException)
{
MapSchoolActivityErrors(activityToUpdate);
SetSchoolActivitiesEditIndex(schoolActivities.EditIndex);
return false;
}
return true;
}
private SchoolActivity GetSchoolActivity()
{
SchoolActivity currentActivity = new SchoolActivity();
currentActivity.Details = schoolActivityDetails.Value;
TryGetSchoolActivityMonthsPerYear(currentActivity);
TryGetSchoolActivityDate(currentActivity);
TryGetSchoolActivityTotalHours(currentActivity);
return currentActivity;
}
private void TryGetSchoolActivityMonthsPerYear(SchoolActivity currentActivity)
{
byte monthsPerYear;
if (byte.TryParse(schoolActivityMonthsPerYear.Value, out monthsPerYear))
{
currentActivity.MonthsPerYear = monthsPerYear;
}
}
private void TryGetSchoolActivityDate(SchoolActivity currentActivity)
{
short activityDate = -1;
if (short.TryParse(schoolActivityDate.Value, out activityDate))
{
currentActivity.ActivityDate = activityDate;
}
}
private void TryGetSchoolActivityTotalHours(SchoolActivity currentActivity)
{
short totalHours = -1;
if (schoolActivityTotalHours.Value.IsNullOrWhiteSpace() == false
&& short.TryParse(schoolActivityTotalHours.Value, out totalHours))
{
currentActivity.TotalHours = totalHours;
}
}
private void ResetSchoolActivityFields()
{
schoolActivityDetails.Value = string.Empty;
schoolActivityMonthsPerYear.SelectedIndex = 0;
schoolActivityDate.SelectedIndex = 0;
schoolActivityTotalHours.Value = string.Empty;
}
private void HideSchoolActivityFields()
{
schoolActivityFields.Visible = false;
}
private void MapSchoolActivityErrors(int activityIndex)
{
SchoolActivity updatedActivity = SessionApplication.SchoolActivities[activityIndex];
MapSchoolActivityErrors(updatedActivity);
}
private void MapSchoolActivityErrors(SchoolActivity updatedActivity)
{
foreach (RuleViolation currentViolation in updatedActivity.GetRuleViolations())
{
schoolActivityErrorMapping[currentViolation].InnerText = currentViolation.ErrorMessage;
}
}
private void ResetSchoolActivityErrors()
{
foreach (RuleViolation currentViolation in schoolActivityErrorMapping.Keys)
{
schoolActivityErrorMapping[currentViolation].InnerText = string.Empty;
}
}
void schoolActivities_RowEditing(object sender, GridViewEditEventArgs e)
{
if (schoolActivities.EditIndex != e.NewEditIndex
&& schoolActivities.EditIndex != -1)
{
ResetSchoolActivityErrors();
SchoolActivity activityToUpdate = GetSchoolActivity();
try
{
SessionApplication.SchoolActivities[schoolActivities.EditIndex] = activityToUpdate;
}
catch (BrokenRuleException)
{
MapSchoolActivityErrors(activityToUpdate);
e.Cancel = true;
}
}
if (e.NewEditIndex != -1)
{
SchoolActivity activityToEdit = SessionApplication.SchoolActivities[e.NewEditIndex];
SetSchoolActivityFields(activityToEdit);
ShowSchoolActivityFields();
ShowModifyActivityButtons();
}
SetSchoolActivitiesEditIndex(e.NewEditIndex);
BindSchoolActivities();
}
private void ShowModifyActivityButtons()
{
addActivity.Visible = false;
updateActivity.Visible = true;
cancelEditActivity.Visible = true;
deleteActivity.Visible = true;
}
private void SetSchoolActivityFields(SchoolActivity activityToEdit)
{
schoolActivityDetails.Value = activityToEdit.Details;
schoolActivityMonthsPerYear.Value = activityToEdit.MonthsPerYear.ToString();
schoolActivityDate.Value = activityToEdit.ActivityDate.ToString();
schoolActivityTotalHours.Value = activityToEdit.TotalHours.ToString();
}
private bool ShowSchoolActivityFields()
{
return schoolActivityFields.Visible = true;
}
private void BindSchoolActivities()
{
schoolActivities.DataSource = SessionApplication.SchoolActivities;
schoolActivities.DataBind();
}
void newActivity_ServerClick(object sender, EventArgs e)
{
if (SessionApplication.SchoolActivities.Count < SchoolActivityList.Rules.MaxCount)
{
if (schoolActivities.EditIndex != -1)
{
if (UpdateSchoolActivity() == false)
{
return;
}
}
else if (schoolActivityFields.Visible)
{
if (AddSchoolActivity() == false)
{
return;
}
}
ShowSchoolActivityFields();
ShowAddActivityButtons();
}
}
private void ShowAddActivityButtons()
{
addActivity.Visible = true;
updateActivity.Visible = false;
cancelEditActivity.Visible = false;
deleteActivity.Visible = false;
}
void ResetSchoolActivitiesEditIndex()
{
SetSchoolActivitiesEditIndex(-1);
}
void SetSchoolActivitiesEditIndex(int rowIndex)
{
schoolActivities.EditIndex = rowIndex;
}
LOL我有时会看到我已经发布，以及只有在我的问题：d – 2012-07-20 17:05:04