正常に動作するグリッドビューがありますが、「編集をクリックしたときに、オブジェクトがオブジェクトのインスタンスに設定されていません。
編集モードのときにグリッドビューのラベルがnullであり、これが問題の原因であると信じていましたが、これを解決する方法がわかりません。
<asp:BoundField DataField="Received" HeaderText="Received" SortExpression="Received"
ReadOnly="true">
<ItemStyle HorizontalAlign="Center" />
</asp:BoundField>
<asp:TemplateField HeaderText="Complete" SortExpression="Complete">
<ItemTemplate>
<asp:Label ID="lblComplete" runat="server" Text='<%# Bind("Complete") %>'></asp:Label>
</ItemTemplate>
<ItemStyle HorizontalAlign="Center" />
</asp:TemplateField>
<asp:BoundField DataField="TransTime" HeaderText="Trans. Time" SortExpression="TransTime"
ReadOnly="true">
<ItemStyle HorizontalAlign="Center" />
</asp:BoundField>
<asp:TemplateField ShowHeader="False">
<ItemTemplate>
<asp:LinkButton ID="lbClose" runat="server" CausesValidation="False" CommandName="CloseClicked" Text ="Close"
OnClick="CloseClick_Click">Close</asp:LinkButton>
<asp:LinkButton ID="lbEdit" runat="server" CausesValidation="False" CommandName="EditRow" Text =""
OnClick="Edit_Click" CommandArgument='<%# Eval("TicketId")%>'>Edit</asp:LinkButton>
<asp:LinkButton ID="lbDelete" runat="server" CausesValidation="False" CommandName="DeleteRow" Text =""
OnClick="Delete_Click">Delete </asp:LinkButton>
</ItemTemplate>
<EditItemTemplate>
<asp:LinkButton ID="lbUpdate" runat="server" CausesValidation="True" CommandName="UpdateRow"
ForeColor="White" Text="Update" CommandArgument='<%# Eval("TicketId")%>'></asp:LinkButton>
<asp:LinkButton ID="lbCancel" runat="server" CausesValidation="False" CommandName="CancelUpdate"
ForeColor="White" CommandArgument='<%# Eval("TicketId")%>' Text="Cancel"></asp:LinkButton>
</EditItemTemplate>
<FooterStyle HorizontalAlign="Center" />
<ItemStyle HorizontalAlign="Center" />
</asp:TemplateField>
</Columns>
<EditRowStyle BackColor="#999999" />
/>
</asp:GridView>
行コマンド
protected void gvData_RowCommand(object sender, GridViewCommandEventArgs e)
{
if (e.CommandName == "EditRow")
{
//This enables the EditTemplate
int rowindex = ((GridViewRow) ((LinkButton)e.CommandSource).NamingContainer).RowIndex;
gvData.EditIndex = rowindex; //Enables the edit row in gridview
}
}
lbClose.Enabled でエラーが発生します
protected void gvData_RowDataBound(object sender, GridViewRowEventArgs e)
{
e.Row.Cells[0].Visible = false;
if (e.Row.RowType == DataControlRowType.DataRow)
{
LinkButton lbClose = (LinkButton)e.Row.Cells[5].FindControl("lbClose");
LinkButton lbEdit = (LinkButton)e.Row.Cells[5].FindControl("lbEdit");
LinkButton lbDelete = (LinkButton)e.Row.Cells[5].FindControl("lbDelete");
var lblTrans = (Label)e.Row.FindControl("lblTrans");
var lblComplete = (Label)e.Row.FindControl("lblComplete");
if (e.Row.Cells[3].Text == "")
{
lbClose.Enabled = true; //Error Here
lbEdit.Enabled = true;
lbDelete.Enabled = true;
}
else
{
lbClose.Enabled = false;
}
}
}