我有一个bool方法，可以计算出工作正常的总和（数量*价格）。
当我从一个按钮调用该方法时，它工作正常。
protected void btnupdate_Click(object sender, EventArgs e)
{
calculate_sum();
}
我还需要从不同的按钮再次调用它。 所以我试着写下这个：
if(calculate_sum())
{
something
}
else
{
something
}
问题在于第二个按钮没有执行该方法，它只取得按下btnupdate之前计算出来的值，并且没有再次执行它。
aspx页面包含在updatepanels中，触发器可能与此有关吗？
以下是该方法的代码：
public bool calculate_sum()
{
bool is_ok = true; ;
double totalsum = 0;
int qty = 0; ;
string p = "";
for (int i = 0; i < GridView2.Rows.Count; i++)
{
if (GridView2.Rows[i].RowType == DataControlRowType.DataRow)
{
TextBox txtqty = GridView2.Rows[i].FindControl("lblquantity") as TextBox;
p = GridView2.Rows[i].Cells[0].Text.ToString();
if (Int32.TryParse(txtqty.Text, out qty))
{
if (qty > 0)
{
double pr = Convert.ToDouble(p.ToString());
//total per row
double tcost = qty * pr;
totalsum = totalsum + tcost;
GridView2.Rows[i].Cells[6].Text = Convert.ToString((tcost));
}
else
{
lblGrandTotal.Visible = true;
lblGrandTotal.Text = "enter only numbers greater than 0";
lblGrandTotal.ForeColor = System.Drawing.Color.Red;
is_ok = false;
}
}
else
{
lblGrandTotal.Visible = true;
lblGrandTotal.Text = "enter only numbers greater than 0";
lblGrandTotal.ForeColor = System.Drawing.Color.Red;
is_ok = false;
}
}
}
if (is_ok)
{
lblGrandTotal.ForeColor = System.Drawing.Color.Black;
lblGrandTotal.Text = Convert.ToString((totalsum));
return is_ok;
}
else
{
return is_ok;
}
}
这里是aspx页面：
<%@ Page Title="Check out" Language="C#" MasterPageFile="~/MasterPage/MasterPage.master" AutoEventWireup="true" CodeFile="CheckOut.aspx.cs" Inherits="CheckOut" %>
<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
<asp:ScriptManagerProxy ID="ScriptManagerProxy1" runat="server">
</asp:ScriptManagerProxy>
<asp:UpdatePanel ID="UpdatePanel1" runat="server" ChildrenAsTriggers="False"
UpdateMode="Conditional">
<ContentTemplate>
<asp:HiddenField ID="hfGrandTotal" runat="server" />
<asp:GridView ID="GridView2" runat="server" AutoGenerateColumns="False" >
<Columns>
<asp:BoundField DataField="Price" HeaderText="Price" ItemStyle-CssClass="price" >
<ItemStyle CssClass="price"></ItemStyle>
</asp:BoundField>
<asp:TemplateField HeaderText="ProductID" Visible="False">
<ItemTemplate>
<asp:Label ID="lblID" runat="server" Text='<%# Eval("ProductID") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="ProductName">
<ItemTemplate>
<asp:Label ID="lblName" runat="server" Text='<%# Eval("ProductName") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Summary">
<ItemTemplate>
<asp:Label ID="lblSum" runat="server" Text='<%# Eval("Summary") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="picPath" Visible="False">
<ItemTemplate>
<asp:Label ID="lblPic" runat="server" Text='<%# Eval("picPath") %>' ></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText = "quantity">
<ItemTemplate>
<asp:TextBox ID="lblquantity" runat="server" >1</asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText = "Total">
<ItemTemplate>
<asp:Label ID="lblTotal" runat="server" ></asp:Label>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
<br />
total sum:
<asp:Button ID="btnupdate" runat="server" Text="update quantity"
onclick="btnupdate_Click" ValidationGroup="panel1" />
<asp:Label ID="lblGrandTotal" runat="server" ></asp:Label>
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="btnupdate" EventName="Click" />
</Triggers>
</asp:UpdatePanel>
<br />
<br />
<br />
<br />
<br />
<asp:UpdatePanel ID="UpdatePanel2" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<asp:Table ID="Table1" runat="server" CellPadding="7" CellSpacing="7"
CaptionAlign="Bottom" HorizontalAlign="Center" BorderStyle="Solid" BorderWidth="1"
BorderColor="Black" Height="305px" Width="408px">
<asp:TableHeaderRow BorderStyle="Solid" BorderWidth="1" BorderColor="Black">
<asp:TableCell ColumnSpan="3" BorderStyle="Solid" BorderWidth="1" BorderColor="Black">customer details</asp:TableCell>
</asp:TableHeaderRow>
<asp:TableRow runat="server" >
<asp:TableCell runat="server" >
<asp:TextBox ID="TextBox1" runat="server" Width="150px"></asp:TextBox>
<asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ForeColor="Red" ErrorMessage="חובה" ControlToValidate="TextBox1" Text="requierd" ValidationGroup="panel2"></asp:RequiredFieldValidator>
</asp:TableCell>
<asp:TableCell runat="server">
<asp:Label ID="Label1" runat="server" Text="name"></asp:Label>
</asp:TableCell>
</asp:TableRow>
<asp:TableRow ID="TableRow1" runat="server">
<asp:TableCell ID="TableCell1" runat="server">
<asp:TextBox ID="TextBox4" runat="server" Width="150px" CausesValidation="True"></asp:TextBox>
<asp:RequiredFieldValidator ID="RequiredFieldValidator2" runat="server" ForeColor="Red" ErrorMessage="חובה" ControlToValidate="TextBox4" Text="requierd" ValidationGroup="panel2"></asp:RequiredFieldValidator>
<br /> <asp:RegularExpressionValidator ID="RegularExpressionValidator1" runat="server" ErrorMessage="הקלד מספר טלפון" ControlToValidate="TextBox4" ForeColor="Red" ValidationExpression="^(02|03|04|08|09|050|052|054|057|074|077)\-\d{7,8}$"></asp:RegularExpressionValidator>
</asp:TableCell>
<asp:TableCell ID="TableCell2" runat="server">
<asp:Label ID="Label4" runat="server" Text="phone"></asp:Label>
</asp:TableCell>
</asp:TableRow>
<asp:TableRow runat="server">
<asp:TableCell runat="server">
<asp:TextBox ID="TextBox2" runat="server" Width="150px" CausesValidation="True"></asp:TextBox>
<asp:RequiredFieldValidator ID="RequiredFieldValidator3" runat="server" ForeColor="Red" ErrorMessage="חובה" ControlToValidate="TextBox2" Text="requierd" ValidationGroup="panel2"></asp:RequiredFieldValidator>
</asp:TableCell>
<asp:TableCell>
<asp:Label ID="Label2" runat="server" Text="address"></asp:Label>
</asp:TableCell>
</asp:TableRow>
<asp:TableRow runat="server">
<asp:TableCell runat="server">
<asp:TextBox ID="TextBox3" runat="server" Width="150px"></asp:TextBox>
<asp:RequiredFieldValidator ID="RequiredFieldValidator4" runat="server" ForeColor="Red" ErrorMessage="חובה" ControlToValidate="TextBox3" Text="requierd" ValidationGroup="panel2"></asp:RequiredFieldValidator>
<br />
<asp:RangeValidator ID="RangeValidator1" runat="server" ErrorMessage="only digits" ControlToValidate="TextBox3" ForeColor="Red" MinimumValue="1000" MaximumValue="9999999999999999" ValidationGroup="panel2"></asp:RangeValidator>
</asp:TableCell>
<asp:TableCell runat="server">
<asp:Label ID="Label3" runat="server" Text="number"></asp:Label>
</asp:TableCell>
</asp:TableRow>
<asp:TableRow>
<asp:TableCell ColumnSpan="3">
<asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="pay" Width="150" ValidationGroup="panel2" />
</asp:TableCell>
</asp:TableRow>
<asp:TableRow>
<asp:TableCell ColumnSpan="3">
<asp:Label ID="lblmessage" runat="server" Text="Label"
Font-Size="XX-Large" Visible="False"></asp:Label>
</asp:TableCell>
</asp:TableRow>
</asp:Table>
<asp:Button ID="btnPrint" runat="server" Text="print"
onclick="btnPrint_Click" Visible="False" />
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="btnPrint" EventName="Click" />
</Triggers>
</asp:UpdatePanel>
</asp:Content>
答案 0 :(得分：1)
你的问题仍然不是很明确......
您所指的“第二个按钮”是否为“Button1”？
如果是这样 - 请注意它位于不同的UpdatePanel中，然后是Grid和“Update”按钮。 当触发第二个UpdatePanel时（来自Button1），在网格中（在另一个UpdatePanel中）所做的更改不一定会随之传递回服务器。
我建议：
暂时删除两个UpdatePanel并查看它是否可以正常工作。如果确实如此，您知道罪魁祸首并将UpdatePanel的UpdateMode更改为Always可能会解决您的问题。
如果这不能解决您的问题，请在评论中建议@JonSkeet，并创建一个显示问题的简短演示，以便我们更好地帮助您...