C# 接受4个参数的方法没有重载
我正在尝试更新gridview。在这里,我使用了三层体系结构方法 这是我的GridViewC# 接受4个参数的方法没有重载,c#,asp.net,gridview,C#,Asp.net,Gridview,我正在尝试更新gridview。在这里,我使用了三层体系结构方法 这是我的GridView <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" CellPadding="4" DataKeyNames="ResllerID" ForeColor="#333333" GridLines="None" OnRowDeleting="DeleteRecord" EmptyDataTex
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" CellPadding="4" DataKeyNames="ResllerID"
ForeColor="#333333" GridLines="None" OnRowDeleting="DeleteRecord" EmptyDataText="There are no data records to display."
AllowPaging="True" AllowSorting="True" onrowediting="GridView1_RowEditing" onrowupdating="GridView1_RowUpdating"
AutoGenerateDeleteButton="True" AutoGenerateEditButton="True" >
<AlternatingRowStyle BackColor="White" />
<Columns>
<asp:TemplateField HeaderText="Reseller Name" SortExpression="ResellerName">
<EditItemTemplate>
<asp:TextBox ID="ResellerTextBox" runat="server" Text='<%# Bind("ResellerName") %>'></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="Label1" runat="server" Text='<%# Bind("ResellerName") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Mobile Number" SortExpression="MobileNumber">
<EditItemTemplate>
<asp:TextBox ID="MobileTextBox" runat="server" Text='<%# Bind("MobileNumber") %>'></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="Label2" runat="server" Text='<%# Bind("MobileNumber") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Reference Number" SortExpression="ReferenceNumber">
<EditItemTemplate>
<asp:TextBox ID="ReferenceTextBox" runat="server" Text='<%# Bind("ReferenceNumber") %>'></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="Label3" runat="server" Text='<%# Bind("ReferenceNumber") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
</Columns>
<FooterStyle BackColor="#990000" Font-Bold="True" ForeColor="White" />
<HeaderStyle BackColor="#990000" Font-Bold="True" ForeColor="White" />
<PagerStyle BackColor="#FFCC66" ForeColor="#333333" HorizontalAlign="Center" />
<RowStyle BackColor="#FFFBD6" ForeColor="#333333" />
<SelectedRowStyle BackColor="#FFCC66" Font-Bold="True" ForeColor="Navy" />
<SortedAscendingCellStyle BackColor="#FDF5AC" />
<SortedAscendingHeaderStyle BackColor="#4D0000" />
<SortedDescendingCellStyle BackColor="#FCF6C0" />
<SortedDescendingHeaderStyle BackColor="#820000" />
</asp:GridView>
经销商代码:
public static void UpdateReseller(Reseller reseller)
{
string query = "UPDATE [Resellers] SET [ResellerName] = @ResellerName, [ReferenceNumber] = @ReferenceNumber WHERE [ResellerID] = @ResellerID";
SqlCommand cmd = new SqlCommand(query);
cmd.Parameters.AddWithValue("@ResellerName", SqlDbType.Text).Value = reseller.ResellerName;
cmd.Parameters.AddWithValue("@MobileNumber", SqlDbType.Text).Value = reseller.MobileNumber;
cmd.Parameters.AddWithValue("@ReferenceNumber", SqlDbType.Text).Value = reseller.ReferenceNumber;
cmd.Parameters.AddWithValue("@ResllerID", SqlDbType.Text).Value = reseller.ResllerID;
DbUtility.UpdateDb(cmd);
}
您的
UpdateReseller
方法只接受一个参数:一个resoller
如果希望能够将各个部分传递给方法,则需要修改签名或使用适当的参数创建重载。您使用四个参数调用它:
ResellerBL.UpdateReseller(resellerId, name.Text, mobileNumber.Text, referenceNumber.Text);
但它只接受一个:
public static void UpdateReseller(Reseller reseller)
有两种选择
错误会准确地告诉您问题所在。。学习的一部分是理解意义。。如果您有一个方法,请查看它需要的参数的数量。您不能将更多参数传递给期望更少的方法
public static void UpdateReseller(Reseller reseller)
var myreseller = New Reseller();
myresller.Id = resellerId;
//etc
ResellerBL.UpdateReseller(myreseller);
public static void UpdateReseller(int resellerId, string resellerName, string resellerMobile, string resellerRefNum)