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업데이트를 시도했지만 "인덱스가 한계를 벗어났습니다. 음수가 아니어야하며 컬렉션의 크기보다 작아야합니다." "이 문제가 디버그에서 발생합니다" 문자열 = gridViewCourse.DataKeys이 (e.RowIndex) .Values ("courseId"). ToString() "템플릿 열이있는 DataGrid 업데이트 VB.net
이이 내 방법입니다
<asp:GridView ID="gridViewCourse"
runat="server"
AutoGenerateColumns="False"
onrowcancelingedit="gridViewCourse_RowCancelingEdit"
onrowdeleting="gridViewCourse_RowDeleting" onrowediting="gridViewCourse_RowEditing"
onrowupdating="gridViewCourse_RowUpdating"
onrowcommand="gridViewCourse_RowCommand"
ShowFooter="True">
<Columns>
<asp:TemplateField>
<EditItemTemplate>
<asp:ImageButton ID="imgbtnUpdate" CommandName="Update" runat="server" ImageUrl="~/Images/update.jpg" ToolTip="Update" Height="20px" Width="20px" />
<asp:ImageButton ID="imgbtnCancel" runat="server" CommandName="Cancel" ImageUrl="~/Images/Cancel.jpg" ToolTip="Cancel" Height="20px" Width="20px" />
</EditItemTemplate>
<ItemTemplate>
<asp:ImageButton ID="imgbtnEdit" CommandName="Edit" runat="server" ImageUrl="~/Images/Edit.jpg" ToolTip="Edit" Height="20px" Width="20px" />
<asp:ImageButton ID="imgbtnDelete" CommandName="Delete" Text="Edit" runat="server" ImageUrl="~/Images/delete.jpg" ToolTip="Delete" Height="20px" Width="20px" />
</ItemTemplate>
<FooterTemplate>
<asp:ImageButton ID="imgbtnAdd" runat="server" ImageUrl="~/Images/AddNewitem.jpg" CommandName="AddNew" Width="30px" Height="30px" ToolTip="Add new User" ValidationGroup="validaiton" />
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Id Cours">
<EditItemTemplate>
<asp:Label ID="lbleditId" runat="server" Text='<%#Eval("CourseId") %>'/>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="lblitemId" runat="server" Text='<%#Eval("CourseId") %>'/>
</ItemTemplate>
<FooterTemplate>
<asp:TextBox ID="txtftrId" runat="server"/>
<asp:RequiredFieldValidator ID="rfvId" runat="server" ControlToValidate="txtftrId" Text="*" ValidationGroup="validaiton"/>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Cours">
<EditItemTemplate>
<asp:TextBox ID="txtCours" runat="server" Text='<%#Eval("CourseName") %>'/>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="lblCours" runat="server" Text='<%#Eval("CourseName") %>'/>
</ItemTemplate>
<FooterTemplate>
<asp:TextBox ID="txtftrCours" runat="server"/>
<asp:RequiredFieldValidator ID="rfvCours" runat="server" ControlToValidate="txtftrCours" Text="*" ValidationGroup="validaiton"/>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Prix">
<EditItemTemplate>
<asp:TextBox ID="txtPrix" runat="server" Text='<%#Eval("Price") %>'/>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="lblPrix" runat="server" Text='<%#Eval("Price") %>'/>
</ItemTemplate>
<FooterTemplate>
<asp:TextBox ID="txtftrPrix" runat="server"/>
<asp:RequiredFieldValidator ID="rfvPrix" runat="server" ControlToValidate="txtftrPrix" Text="*" ValidationGroup="validaiton"/>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Tuteur">
<EditItemTemplate>
<asp:TextBox ID="txtTuteur" runat="server" Text='<%#Eval("Tutor") %>'/>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="lblTuteur" runat="server" Text='<%#Eval("Tutor") %>'/>
</ItemTemplate>
<FooterTemplate>
<asp:TextBox ID="txtftrTuteur" runat="server"/>
<asp:RequiredFieldValidator ID="rfvTuteur" runat="server" ControlToValidate="txtftrTuteur" Text="*" ValidationGroup="validaiton"/>
</FooterTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
이 내 그리드 ASP 코드 업데이트로 courseId을 어둡게
Protected Sub gridViewCourse_RowUpdating(ByVal sender As Object, ByVal e As GridViewUpdateEventArgs)
Dim courseId As String = gridViewCourse.DataKeys(e.RowIndex).Values("CourseId").ToString()
Dim courseName As TextBox = DirectCast(gridViewCourse.Rows(e.RowIndex).FindControl("CourseName"), TextBox)
Dim price As TextBox = DirectCast(gridViewCourse.Rows(e.RowIndex).FindControl("Price"), TextBox)
Dim tutor As TextBox = DirectCast(gridViewCourse.Rows(e.RowIndex).FindControl("Tutor"), TextBox)
con.Open()
Dim cmd As New SqlCommand(("update Courses set CourseName='" + courseName.Text & "',Price='" + price.Text & "',Tutor='") + tutor.Text & "' where CourseID=" & courseid, con)
cmd.ExecuteNonQuery()
con.Close()
lblresult.ForeColor = Color.Green
lblresult.Text = " Details Updated successfully"
gridViewCourse.EditIndex = -1
BindCoursesDetails()
End Sub
그래서이 줄은 그는 내가 DataKeyNames
이 줄
감사 프랭크
나는이 "새로운하는 SqlCommand로 cmd를가 ((("업데이트 과정이 CourseName = ' "+ courseName.Text &"'가격 = ' ") + price.Text &"', 교사 설정 오류 오순절를 얻을 수 = ' ") + tutor.Text &"'CourseID = "& courseId, con)" – FrankSharp
오류는 객체 참조가 객체의 인스턴스에 정의되지 않는다는 것입니다. ??? – FrankSharp
죄송합니다. 지금도 같은 오류가 발생합니다. "cmd.Parameters.Add ("@ CourseName ", SqlDbType.VarChar, 30) .Value = courseName.Text" – FrankSharp