[英]How can i add a event handler to a customized button inside listview?
這是我的標記
<%@ Page Title="Daily Expenses" Language="C#" MasterPageFile="~/MasterPage.master" AutoEventWireup="true" CodeFile="Daily Expenses.aspx.cs" Inherits="Daily_Expenses" %>
函數calendar_datechange（）{__doPostBack（'txtCalendar'，'txtCalendar_TextChanged'）; }
function Calculate_Difference() {
alert("Hello");
}
</script>
<asp:ToolkitScriptManager ID="AjaxScript" runat="server"></asp:ToolkitScriptManager>
<asp:TextBox ID="txtCalendar" runat="server"
ontextchanged="txtCalendar_TextChanged"></asp:TextBox>
<%--<asp:PopupControlExtender ID="txtCalendar_PopupControlExtender" runat="server"
DynamicServicePath="" Enabled="True" ExtenderControlID="" PopupControlID="Panel1"
TargetControlID="txtCalendar">
</asp:PopupControlExtender>
<asp:Panel ID="Panel1" runat="server">
<h2>Hello There</h2>
</asp:Panel>--%>
<asp:CalendarExtender ID="CalendarControl" runat="server" OnClientDateSelectionChanged="calendar_datechange" TargetControlID="txtCalendar" PopupButtonID="CalendarButton">
</asp:CalendarExtender>
<%--<ajaxToolkit:CalendarExtender ID="CalendarControl" runat="server" OnClientDateSelectionChanged="calendar_datechange" TargetControlID="txtCalendar" PopupButtonID="CalendarButton"></ajaxToolkit:CalendarExtender>--%>
<asp:Button ID="CalendarButton" runat="server" Text="Calendar" />
<br />
<br />
<br />
<asp:ListView ID="ListView1" runat="server" DataKeyNames="SNO"
DataSourceID="SqlDataSource1" InsertItemPosition="LastItem">
<AlternatingItemTemplate>
<li style="background-color: #FFF8DC;">SNO:
<asp:Label ID="SNOLabel" runat="server" Text='<%# Eval("SNO") %>' />
<br />
Taxinreal:
<asp:Label ID="TaxinrealLabel" runat="server" Text='<%# Eval("Taxinreal") %>' />
<br />
Taxinpercent:
<asp:Label ID="TaxinpercentLabel" runat="server"
Text='<%# Eval("Taxinpercent") %>' />
<br />
Amount:
<asp:Label ID="AmountLabel" runat="server" Text='<%# Eval("Amount") %>' />
<br />
NetAmount:
<asp:Label ID="NetAmountLabel" runat="server" Text='<%# Eval("NetAmount") %>' />
<br />
DateTakenPlace:
<asp:Label ID="DateTakenPlaceLabel" runat="server"
Text='<%# Eval("DateTakenPlace") %>' />
<br />
<asp:Button ID="EditButton" runat="server" CommandName="Edit" Text="Edit" />
<asp:Button ID="DeleteButton" runat="server" CommandName="Delete"
Text="Delete" />
<asp:Button ID="Differencebutton" runat="server" Text="Calculate Difference" OnClientClick="Calculate_Difference" />
</li>
</AlternatingItemTemplate>
<EditItemTemplate>
<li style="background-color: #008A8C;color: #FFFFFF;">SNO:
<asp:Label ID="SNOLabel1" runat="server" Text='<%# Eval("SNO") %>' />
<br />
Taxinreal:
<asp:TextBox ID="TaxinrealTextBox" runat="server"
Text='<%# Bind("Taxinreal") %>' />
<br />
Taxinpercent:
<asp:TextBox ID="TaxinpercentTextBox" runat="server"
Text='<%# Bind("Taxinpercent") %>' />
<br />
Amount:
<asp:TextBox ID="AmountTextBox" runat="server" Text='<%# Bind("Amount") %>' />
<br />
NetAmount:
<asp:TextBox ID="NetAmountTextBox" runat="server"
Text='<%# Bind("NetAmount") %>' />
<br />
DateTakenPlace:
<asp:TextBox ID="DateTakenPlaceTextBox" runat="server"
Text='<%# Bind("DateTakenPlace") %>' />
<br />
<asp:Button ID="UpdateButton" runat="server" CommandName="Update"
Text="Update" />
<asp:Button ID="CancelButton" runat="server" CommandName="Cancel"
Text="Cancel" />
<asp:Button ID="Differencebutton" runat="server" CommandName="Difference" OnClientClick="Calculate_Difference" Text="Calculate Difference" />
</li>
</EditItemTemplate>
<EmptyDataTemplate>
No data was returned.
</EmptyDataTemplate>
<InsertItemTemplate>
<li style="">Taxinreal:
<asp:TextBox ID="TaxinrealTextBox" runat="server"
Text='<%# Bind("Taxinreal") %>' />
<br />
Taxinpercent:
<asp:TextBox ID="TaxinpercentTextBox" runat="server"
Text='<%# Bind("Taxinpercent") %>' />
<br />
Amount:
<asp:TextBox ID="AmountTextBox" runat="server" Text='<%# Bind("Amount") %>' />
<br />
NetAmount:
<asp:TextBox ID="NetAmountTextBox" runat="server"
Text='<%# Bind("NetAmount") %>' />
<br />
DateTakenPlace:
<asp:TextBox ID="DateTakenPlaceTextBox" runat="server"
Text='<%# Bind("DateTakenPlace") %>' />
<br />
<asp:Button ID="InsertButton" runat="server" CommandName="Insert"
Text="Insert" />
<asp:Button ID="CancelButton" runat="server" CommandName="Cancel"
Text="Clear" />
<asp:Button ID="Differencebutton" runat="server" CommandName="Difference" OnClientClick="Calculate_Difference" Text="Calculate Difference" />
</li>
</InsertItemTemplate>
<ItemSeparatorTemplate>
<br />
</ItemSeparatorTemplate>
<ItemTemplate>
<li style="background-color: #DCDCDC;color: #000000;">SNO:
<asp:Label ID="SNOLabel" runat="server" Text='<%# Eval("SNO") %>' />
<br />
Taxinreal:
<asp:Label ID="TaxinrealLabel" runat="server" Text='<%# Eval("Taxinreal") %>' />
<br />
Taxinpercent:
<asp:Label ID="TaxinpercentLabel" runat="server"
Text='<%# Eval("Taxinpercent") %>' />
<br />
Amount:
<asp:Label ID="AmountLabel" runat="server" Text='<%# Eval("Amount") %>' />
<br />
NetAmount:
<asp:Label ID="NetAmountLabel" runat="server" Text='<%# Eval("NetAmount") %>' />
<br />
DateTakenPlace:
<asp:Label ID="DateTakenPlaceLabel" runat="server"
Text='<%# Eval("DateTakenPlace") %>' />
<br />
<asp:Button ID="EditButton" runat="server" CommandName="Edit" Text="Edit" />
<asp:Button ID="DeleteButton" runat="server" CommandName="Delete"
Text="Delete" />
<asp:Button ID="Differencebutton" runat="server" CommandName="Difference" OnClientClick="Calculate_Difference" Text="Calculate Difference" />
</li>
</ItemTemplate>
<LayoutTemplate>
<ul ID="itemPlaceholderContainer" runat="server"
style="font-family: Verdana, Arial, Helvetica, sans-serif;">
<li runat="server" id="itemPlaceholder" />
</ul>
<div style="text-align: center;background-color: #CCCCCC;font-family: Verdana, Arial, Helvetica, sans-serif;color: #000000;">
<asp:DataPager ID="DataPager1" runat="server">
<Fields>
<asp:NextPreviousPagerField ButtonType="Button" ShowFirstPageButton="True"
ShowLastPageButton="True" />
</Fields>
</asp:DataPager>
</div>
</LayoutTemplate>
<SelectedItemTemplate>
<li style="background-color: #008A8C;font-weight: bold;color: #FFFFFF;">SNO:
<asp:Label ID="SNOLabel" runat="server" Text='<%# Eval("SNO") %>' />
<br />
Taxinreal:
<asp:Label ID="TaxinrealLabel" runat="server" Text='<%# Eval("Taxinreal") %>' />
<br />
Taxinpercent:
<asp:Label ID="TaxinpercentLabel" runat="server"
Text='<%# Eval("Taxinpercent") %>' />
<br />
Amount:
<asp:Label ID="AmountLabel" runat="server" Text='<%# Eval("Amount") %>' />
<br />
NetAmount:
<asp:Label ID="NetAmountLabel" runat="server" Text='<%# Eval("NetAmount") %>' />
<br />
DateTakenPlace:
<asp:Label ID="DateTakenPlaceLabel" runat="server"
Text='<%# Eval("DateTakenPlace") %>' />
<br />
<asp:Button ID="EditButton" runat="server" CommandName="Edit" Text="Edit" />
<asp:Button ID="DeleteButton" runat="server" CommandName="Delete"
Text="Delete" />
<asp:Button ID="Differencebutton" runat="server" CommandName="Difference" OnClientClick="Calculate_Difference" Text="Calculate Difference" />
</li>
</SelectedItemTemplate>
</asp:ListView>
<asp:SqlDataSource ID="SqlDataSource1" runat="server"
ConnectionString="<%$ ConnectionStrings:ConnString %>"
DeleteCommand="DELETE FROM [tblexpenses] WHERE [SNO] = @SNO"
InsertCommand="INSERT INTO [tblexpenses] ([Taxinreal], [Taxinpercent], [Amount], [NetAmount], [DateTakenPlace]) VALUES (@Taxinreal, @Taxinpercent, @Amount, @NetAmount, @DateTakenPlace)"
SelectCommand="SELECT * FROM [tblexpenses] WHERE ([DateTakenPlace] = @DateTakenPlace2)"
UpdateCommand="UPDATE [tblexpenses] SET [Taxinreal] = @Taxinreal, [Taxinpercent] = @Taxinpercent, [Amount] = @Amount, [NetAmount] = @NetAmount, [DateTakenPlace] = @DateTakenPlace WHERE [SNO] = @SNO">
<DeleteParameters>
<asp:Parameter Name="SNO" Type="Int32" />
</DeleteParameters>
<InsertParameters>
<asp:Parameter Name="Taxinreal" Type="Double" />
<asp:Parameter Name="Taxinpercent" Type="Decimal" />
<asp:Parameter Name="Amount" Type="Double" />
<asp:Parameter Name="NetAmount" Type="Int32"/>
<asp:Parameter DbType="Date" Name="DateTakenPlace" />
</InsertParameters>
<SelectParameters>
<asp:ControlParameter ControlID="txtCalendar" DbType="Date"
Name="DateTakenPlace2" PropertyName="Text" />
</SelectParameters>
<UpdateParameters>
<asp:Parameter Name="Taxinreal" Type="Double" />
<asp:Parameter Name="Taxinpercent" Type="Decimal" />
<asp:Parameter Name="Amount" Type="Double" />
<asp:Parameter Name="NetAmount" Type="Int32" />
<asp:Parameter DbType="Date" Name="DateTakenPlace" />
<asp:Parameter Name="SNO" Type="Int32" />
</UpdateParameters>
</asp:SqlDataSource>
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我的數據庫中有一個表tblexpense 。 我有名為Taxinreal ， Taxinpercent ，* Amount * NetAmount 。* NetAmount *的列是等於* （Amount-Taxinreal-Taxinpercent）的計算列*現在我想在運行時在aspx頁面中用戶必須能夠插入金額，稅金，稅金百分比以及根據用戶NetAmount提供的值必須在運行時計算（Netamount = Amount-Tax-Taxpercentage）並將其插入數據庫中。為此，我有一個差分按鈕，應執行所需的數學運算。 我遇到的問題是我正在使用列表視圖。 現在添加一個新按鈕很簡單，但是如何在差異按鈕的click事件中執行所需的數學運算，以便當列表視圖處於更新模式時，用戶可以更改taxinreal，taxinpercent的值並在運行時獲取結果，並且在數據庫中更新??? 我急需解決方案（PS我只需要使用Listview）。
如何從“提交”按鈕單擊事件處理程序內部使表單無效或停止處理表單？
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[英]How can i add a button programmatically and when clicked invoke its event handler?
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[英]How can i add listviewitemeventargs as a argument in onitemupdated event of a listview?
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