当我从日历中选择日期时，另一个文本框中的日期将消失。 我不知道这个问题的原因是我第一次看到这样的问题。 我试图删除日历，但我没有成功解决问题。 感谢。
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using MySql.Data.MySqlClient;
namespace WebApplication1
{
public partial class comDisp : System.Web.UI.Page
{
string connectionstring = @"Data Source=localhost; Database=globaldotdb; user ID=root; Password=peleg1708";
protected void Page_Load(object sender, EventArgs e)
{
BindData();
}
private void BindData()
{
using (MySqlConnection cn = new MySqlConnection(connectionstring))
{
MySqlDataAdapter adp = new MySqlDataAdapter(("SELECT tblcommitment.codeCom,tblcustom.Customer, tblvendor.Vendor, tblcommitment.dateStart, tblcommitment.dateEnd, tblregion.Region, tblservice.Service, tblservice.unit, tblcommitment.commitment,tblcommitment.cost, tblcommitment.overage, tblcommitment.currency FROM ((((tblvendor INNER JOIN tblcommitment ON tblvendor.codeVendor = tblcommitment.codeVendor) INNER JOIN tblservice ON tblcommitment.codeService = tblservice.codeService) INNER JOIN tblregion ON tblcommitment.codeRegion = tblregion.codeRegion) INNER JOIN tblcustom ON tblcommitment.codeCust = tblcustom.codeCust)"), cn);
DataTable dt = new DataTable();
adp.Fill(dt);
if (dt.Rows.Count > 0)
{
gvcom.DataSource = dt;
gvcom.DataBind();
}
}
}
protected void gvcom_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
int codecom = int.Parse(gvcom.DataKeys[e.RowIndex].Value.ToString());
deleteusage(codecom);
BindData();
}
private void deleteusage(int codecom)
{
using (MySqlConnection cn = new MySqlConnection(connectionstring))
{
string query = "DELETE FROM tblcommitment WHERE codeCom=" + codecom + " ";
MySqlCommand cmd = new MySqlCommand(query, cn);
cn.Open();
cmd.ExecuteNonQuery();
}
}
protected void gvcom_DataBound(object sender, EventArgs e)
{
DropDownList DDLCu = gvcom.FooterRow.FindControl("DDLCu") as DropDownList;
DropDownList DDLVe = gvcom.FooterRow.FindControl("DDLVe") as DropDownList;
DropDownList DDLSe = gvcom.FooterRow.FindControl("DDLSe") as DropDownList;
DropDownList DDLRe = gvcom.FooterRow.FindControl("DDLRe") as DropDownList;
using (MySqlConnection cn = new MySqlConnection(connectionstring))
{
MySqlDataAdapter Cadp = new MySqlDataAdapter(("SELECT * from tblcustom"), cn);
DataTable Cdt = new DataTable();
Cadp.Fill(Cdt);
if (Cdt.Rows.Count > 0)
{
DDLCu.DataSource = Cdt;
DDLCu.DataTextField = "Customer";
DDLCu.DataValueField = "codeCust";
DDLCu.DataBind();
}
MySqlDataAdapter Vadp = new MySqlDataAdapter(("SELECT * from tblvendor"), cn);
DataTable Vdt = new DataTable();
Vadp.Fill(Vdt);
if (Vdt.Rows.Count > 0)
{
DDLVe.DataSource = Vdt;
DDLVe.DataTextField = "Vendor";
DDLVe.DataValueField = "codeVendor";
DDLVe.DataBind();
}
MySqlDataAdapter Sadp = new MySqlDataAdapter(("SELECT * from tblservice"), cn);
DataTable Sdt = new DataTable();
Sadp.Fill(Sdt);
if (Sdt.Rows.Count > 0)
{
DDLSe.DataSource = Sdt;
DDLSe.DataTextField = "Service";
DDLSe.DataValueField = "codeService";
DDLSe.DataBind();
}
MySqlDataAdapter Radp = new MySqlDataAdapter(("SELECT * from tblregion"), cn);
DataTable Rdt = new DataTable();
Radp.Fill(Rdt);
if (Rdt.Rows.Count > 0)
{
DDLRe.DataSource = Rdt;
DDLRe.DataTextField = "Region";
DDLRe.DataValueField = "codeRegion";
DDLRe.DataBind();
}
}
}
private void add(int cc, int cv, int cs, int cr, int com, double costs,double ov,string cur, string ds, string de)
{
using (MySqlConnection cn = new MySqlConnection(connectionstring))
{
string query = "insert into tblusage(codeCust,codeVendor,codeService,codeRegion,dateStart,dateEnd,commitment,overage,cost,currency) values (@cc,@cv,@cs,@cr,@ds,@de,@com,@ov,@costs,@cur) ";
MySqlCommand cmd = new MySqlCommand(query, cn);
cmd.Parameters.Add("@cc", MySqlDbType.Int32).Value = cc;
cmd.Parameters.Add("@cv", MySqlDbType.Int32).Value = cv;
cmd.Parameters.Add("@cs", MySqlDbType.Int32).Value = cs;
cmd.Parameters.Add("@cr", MySqlDbType.Int32).Value = cr;
cmd.Parameters.Add("@ds", MySqlDbType.Date).Value = ds;
cmd.Parameters.Add("@de", MySqlDbType.Date).Value = de;
cmd.Parameters.Add("@com", MySqlDbType.Int32).Value = com;
cmd.Parameters.Add("@costs", MySqlDbType.Double).Value = costs;
cmd.Parameters.Add("@ov", MySqlDbType.Double).Value = com;
cmd.Parameters.Add("@cur", MySqlDbType.String).Value = cur;
cn.Open();
cmd.ExecuteNonQuery();
}
}
protected void Lnkadd_Click(object sender, EventArgs e)
{
DropDownList DDLCu = gvcom.FooterRow.FindControl("DDLCu") as DropDownList;
DropDownList DDLVe = gvcom.FooterRow.FindControl("DDLVe") as DropDownList;
DropDownList DDLSe = gvcom.FooterRow.FindControl("DDLSe") as DropDownList;
DropDownList DDLRe = gvcom.FooterRow.FindControl("DDLRe") as DropDownList;
DropDownList DDLIS = gvcom.FooterRow.FindControl("DDLIS") as DropDownList;
TextBox txtds = (TextBox)gvcom.FooterRow.FindControl("TBDS");
TextBox txtde = (TextBox)gvcom.FooterRow.FindControl("TBDE");
TextBox txtcom = (TextBox)gvcom.FooterRow.FindControl("TxtCom");
TextBox txtcost = (TextBox)gvcom.FooterRow.FindControl("TxtCost");
TextBox txtov = (TextBox)gvcom.FooterRow.FindControl("TxtOv");
TextBox txtcur = (TextBox)gvcom.FooterRow.FindControl("TxtCur");
int cc = int.Parse(DDLCu.SelectedValue);
int cv = int.Parse(DDLVe.SelectedValue);
int cs = int.Parse(DDLSe.SelectedValue);
int cr = int.Parse(DDLRe.SelectedValue);
int com = int.Parse(txtcom.Text);
double cost = double.Parse(txtcost.Text);
double over = double.Parse(txtov.Text);
string DS = txtds.Text;
string DE = txtde.Text;
string Cur = txtcur.Text;
string sDate = Convert.ToDateTime(txtds.Text).ToString("yyyy-MM-dd");
string eDate = Convert.ToDateTime(txtde.Text).ToString("yyyy-MM-dd");
add(cc, cv, cs, cr, com, cost, over, Cur,sDate,eDate);
BindData();
Response.Redirect("http://localhost:56717/comDisp.aspx");
}
protected void Calendar1_SelectionChanged(object sender, EventArgs e)
{
TextBox txtde = (TextBox)gvcom.FooterRow.FindControl("TextBox1");
Calendar cae = gvcom.FooterRow.FindControl("Calendar1") as Calendar;
txtde.Text = cae.SelectedDate.ToString("d");
}
protected void CalendarS_SelectionChanged(object sender, EventArgs e)
{
TextBox txtds = (TextBox)gvcom.FooterRow.FindControl("TxtS");
Calendar cae = gvcom.FooterRow.FindControl("CalendarS") as Calendar;
txtds.Text = cae.SelectedDate.ToString("d");
}
}
}
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="comDisp.aspx.cs" Inherits="WebApplication1.comDisp" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:GridView ID="gvcom" runat="server" AutoGenerateColumns="False"
DataKeyNames="codeCom" ondatabound="gvcom_DataBound"
onrowdeleting="gvcom_RowDeleting" ShowFooter="True">
<Columns>
<asp:TemplateField HeaderText="codecom" Visible="False">
<ItemTemplate>
<asp:Label ID="Label1" runat="server" Text='<%# Eval("codeCom") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Customer">
<FooterTemplate>
<asp:DropDownList ID="DDLCu" runat="server" AutoPostBack="True">
</asp:DropDownList>
</FooterTemplate>
<ItemTemplate>
<asp:Label ID="Label1" runat="server" Text='<%# Eval("Customer") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Vendor">
<FooterTemplate>
<asp:DropDownList ID="DDLVe" runat="server" AutoPostBack="True">
</asp:DropDownList>
</FooterTemplate>
<ItemTemplate>
<asp:Label ID="Label1" runat="server" Text='<%# Eval("Vendor") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="dateStart">
<FooterTemplate>
<asp:Calendar ID="CalendarS" runat="server" BackColor="White"
BorderColor="#3366CC" BorderWidth="1px" CellPadding="1"
DayNameFormat="Shortest" Font-Names="Verdana" Font-Size="8pt"
ForeColor="#003399" Height="118px"
onselectionchanged="CalendarS_SelectionChanged" Width="158px">
<DayHeaderStyle BackColor="#99CCCC" ForeColor="#336666" Height="1px" />
<NextPrevStyle Font-Size="8pt" ForeColor="#CCCCFF" />
<OtherMonthDayStyle ForeColor="#999999" />
<SelectedDayStyle BackColor="#009999" Font-Bold="True" ForeColor="#CCFF99" />
<SelectorStyle BackColor="#99CCCC" ForeColor="#336666" />
<TitleStyle BackColor="#003399" BorderColor="#3366CC" BorderWidth="1px"
Font-Bold="True" Font-Size="10pt" ForeColor="#CCCCFF" Height="25px" />
<TodayDayStyle BackColor="#99CCCC" ForeColor="White" />
<WeekendDayStyle BackColor="#CCCCFF" />
</asp:Calendar>
<asp:TextBox ID="TxtS" runat="server"></asp:TextBox>
</FooterTemplate>
<ItemTemplate>
<asp:Label ID="Label1" runat="server" Text='<%# Eval("dateStart") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="dateEnd">
<FooterTemplate>
<asp:Calendar ID="Calendar1" runat="server" BackColor="White"
BorderColor="Black" BorderStyle="Solid" CellSpacing="1" Font-Names="Verdana"
Font-Size="9pt" ForeColor="Black" Height="119px" NextPrevFormat="ShortMonth"
onselectionchanged="Calendar1_SelectionChanged" Width="167px">
<DayHeaderStyle Font-Bold="True" Font-Size="8pt" ForeColor="#333333"
Height="8pt" />
<DayStyle BackColor="#CCCCCC" />
<NextPrevStyle Font-Bold="True" Font-Size="8pt" ForeColor="White" />
<OtherMonthDayStyle ForeColor="#999999" />
<SelectedDayStyle BackColor="#333399" ForeColor="White" />
<TitleStyle BackColor="#333399" BorderStyle="Solid" Font-Bold="True"
Font-Size="12pt" ForeColor="White" Height="12pt" />
<TodayDayStyle BackColor="#999999" ForeColor="White" />
</asp:Calendar>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
</FooterTemplate>
<ItemTemplate>
<asp:Label ID="Label1" runat="server" Text='<%# Eval("dateEnd") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="region">
<FooterTemplate>
<asp:DropDownList ID="DDLRe" runat="server" AutoPostBack="True">
</asp:DropDownList>
</FooterTemplate>
<ItemTemplate>
<asp:Label ID="Label1" runat="server" Text='<%# Eval("Region") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="service">
<FooterTemplate>
<asp:DropDownList ID="DDLSe" runat="server" AutoPostBack="True">
</asp:DropDownList>
</FooterTemplate>
<ItemTemplate>
<asp:Label ID="Label1" runat="server" Text='<%# Eval("Service") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="unit">
<ItemTemplate>
<asp:Label ID="Label1" runat="server" Text='<%# Eval("unit") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="commitment">
<ItemTemplate>
<asp:Label ID="Label1" runat="server" Text='<%# Eval("commitment") %>'></asp:Label>
</ItemTemplate>
<FooterTemplate>
<asp:TextBox ID="TxtCom" runat="server"></asp:TextBox>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="commitment_cost">
<ItemTemplate>
<asp:Label ID="Label1" runat="server" Text='<%# Eval("cost") %>'></asp:Label>
</ItemTemplate>
<FooterTemplate>
<asp:TextBox ID="TxtCost" runat="server"></asp:TextBox>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="overage_cost">
<ItemTemplate>
<asp:Label ID="Label1" runat="server" Text='<%# Eval("overage") %>'></asp:Label>
</ItemTemplate>
<FooterTemplate>
<asp:TextBox ID="TxtOv" runat="server"></asp:TextBox>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="currency">
<ItemTemplate>
<asp:Label ID="Label1" runat="server" Text='<%# Eval("currency") %>'></asp:Label>
</ItemTemplate>
<FooterTemplate>
<asp:TextBox ID="TxtCur" runat="server"></asp:TextBox>
<asp:LinkButton ID="Lnkadd" runat="server" onclick="Lnkadd_Click">add</asp:LinkButton>
</FooterTemplate>
</asp:TemplateField>
<asp:CommandField HeaderText="Operation" ShowDeleteButton="True" />
</Columns>
</asp:GridView>
</div>
</form>
</body>
</html>
答案 0 :(得分：1)
您正在绑定每个回发上的数据，您应该检查IsPostBack属性以避免这种情况，并仅在页面加载时首次绑定数据： -
protected void Page_Load(object sender, EventArgs e)
{
if(!IsPostBack)
BindData();
}