这可能是一个非常愚蠢的错误，但是gridview的状态以及何时发生/更改总是让我感到困惑。
我有一个详细信息视图作为输入。页脚中有一个“新建”按钮，用于将dv置于insertmode中。我想执行输入检查，因此aspx页面中的asp：sqldatasource是最小的，并且检查是在后面的代码中完成的。该方法可以采用的一个路径构造insertcommand，根据需要添加参数，并添加和输入数据库，但另一个路径只是向标签提供错误消息并结束方法。当这条路径发生时说“数据源[datasource]不支持插入，除非指定了insertcommand”，我在IE中得到一个调试器弹出窗口
DetailsView控件：
<asp:DetailsView ID="dvInsertInterrupt" runat="server" AutoGenerateRows="false" DataSourceID="sqldsInsertInterrupt" CssClass="table table-striped table-bordered">
<Fields>
<asp:TemplateField HeaderText="Customer" InsertVisible="true" HeaderStyle-CssClass="col-xs-3 field-label active">
<InsertItemTemplate>
<asp:DropDownList ID="ddlNames" runat="server" DataSourceID="sqldsNames" DataTextField="Name" DataValueField="AccountNumber" CssClass="col-md-9 form-control" />
</InsertItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Start Date" InsertVisible="true" HeaderStyle-CssClass="col-xs-3 field-label active">
<InsertItemTemplate>
<asp:Calendar ID="calStartDate" runat="server" CssClas="col-md-9 form-control" />
</InsertItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Start Time" InsertVisible="true" HeaderStyle-CssClass="col-xs-3 field-label active">
<InsertItemTemplate>
<asp:TextBox ID="txtStartTime" runat="server" MaxLength="4" /><asp:Label ID="lblInfo" runat="server"><small> 24-Hour Format</small></asp:Label>
</InsertItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Duration" InsertVisible="true" HeaderStyle-CssClass="col-xs-3 field-label active">
<InsertItemTemplate>
<asp:DropDownList ID="ddlHours" runat="server" CssClass="col-md-9 form-control">
<asp:ListItem Text="2" Value="2" />
<asp:ListItem Text="3" Value="3" />
<asp:ListItem Text="4" Value="4" />
<asp:ListItem Text="5" Value="5" />
<asp:ListItem Text="6" Value="6" />
<asp:ListItem Text="7" Value="7" />
<asp:ListItem Text="8" Value="8" Selected="True" />
</asp:DropDownList>
</InsertItemTemplate>
</asp:TemplateField>
<asp:TemplateField ShowHeader="false" HeaderStyle-CssClass="field-label col-xs-3 active">
<ItemTemplate>
<asp:LinkButton ID="lbNew" runat="server" CausesValidation="false" CommandName="New" Text="New Interrupt" CssClass="btn btn-primary" />
</ItemTemplate>
<InsertItemTemplate>
<asp:LinkButton ID="lbInsert" runat="server" CausesValidation="false" CommandName="Insert" Text="Insert" CssClass="btn btn-primary" />
<asp:LinkButton ID="lbCancel" runat="server" CausesValidation="false" CommandName="Cancel" Text="Cancel" CssClass="btn btn-default" />
</InsertItemTemplate>
</asp:TemplateField>
</Fields>
</asp:DetailsView>
数据源：
<asp:SqlDataSource ID="sqldsInsertInterrupt" runat="server" ConnectionString="<%$ ConnectionStrings:WebTestConnectionString %>"
SelectCommand="SELECT * FROM Interrupt" InsertCommand="" />
方法背后的代码：
Protected Sub dvInsertInterrupt_RowCommand(ByVal sender As Object, ByVal e As DetailsViewCommandEventArgs) Handles dvInsertInterrupt.ItemCommand
Try
If e.CommandName = "Insert" Then
Dim accountNumber As Integer = DirectCast(dvInsertInterrupt.Rows(0).Cells(1).Controls(1), DropDownList).SelectedValue
Dim startDate As DateTime = DirectCast(dvInsertInterrupt.Rows(1).Cells(1).Controls(1), Calendar).SelectedDate
Dim milTime As String = DirectCast(dvInsertInterrupt.Rows(2).Cells(1).Controls(1), TextBox).Text
Dim hr As Integer = 0
Dim min As Integer = 0
Dim start As DateTime
Dim hours As Integer = DirectCast(dvInsertInterrupt.Rows(3).Cells(1).Controls(1), DropDownList).SelectedValue
Dim endDate As DateTime
Dim message As String = ""
If IsNumeric(milTime) Then
If milTime.Length < 4 Then
Select Case milTime.Length
Case Is < 2
milTime = "000" & milTime.ToString
Case Is < 3
milTime = "00" & milTime.ToString
Case Else
milTime = "0" & milTime.ToString
End Select
hr = Left(milTime, 2)
min = Right(milTime, 2)
Else
hr = Left(milTime, 2)
min = Right(milTime, 2)
End If
If hr < 0 Or hr > 23 Then
message = "Hour must be between 0 and 23"
DirectCast(dvInsertInterrupt.Rows(2).Cells(1).Controls(1), TextBox).Text = ""
Else
If min < 0 Or min > 59 Then
message = "Minutes must be between 0 and 59"
DirectCast(dvInsertInterrupt.Rows(2).Cells(1).Controls(1), TextBox).Text = ""
Else
start = New DateTime(startDate.Year, startDate.Month, startDate.Day, hr, min, 0)
endDate = start.AddHours(hours)
End If
End If
Else
message = "Enter numeric values only"
DirectCast(dvInsertInterrupt.Rows(2).Cells(1).Controls(1), TextBox).Text = ""
End If
If Not CheckForInterrupt(accountNumber, start, endDate) Then
sqldsInsertInterrupt.InsertCommand = "INSERT INTO Interrupt (CustomerAccountNumber, StartDate, Hours, EndDate, Approved, SecondNotificationSent) VALUES (@accountNumber, @startDate, @hours, @endDate, 0, 0)"
sqldsInsertInterrupt.InsertParameters.Add("accountNumber", accountNumber)
sqldsInsertInterrupt.InsertParameters.Add("startDate", start)
sqldsInsertInterrupt.InsertParameters.Add("hours", hours)
sqldsInsertInterrupt.InsertParameters.Add("endDate", endDate)
Else
lblInsertMessage.Text = "There is already an interrupt scheduled at that time!"
End If
End If
Catch ex As Exception
lblInsertMessage.Text = "**Error** - " & ex.ToString & " **"
Finally
End Try
End Sub