c#和sql
求 用c#和sql 写的关于路面管理系统 只要这之类的 比如 沥青路面管理系统 求帮助 本人十分感谢 --------------------编程问答-------------------- 估计你求不到。 --------------------编程问答-------------------- 找一个近似的,改一改套用一下就行了.你要人家做的与你同样的东西,不是让你和他自己竞争嘛! --------------------编程问答-------------------- 所有的管理系统都是一个模式，从网上档一个源码，看看一改，就是你的了。 --------------------编程问答-------------------- 沥青路面管理系统？？？
你整理一下需求，自己做，基本的功能涉及到数据的增删改查，报表统计查询打印啥的。 --------------------编程问答-------------------- 这个怎么帮你做找啊，你有没有自己的想法？至少要描述一下你要做什么呀。什么都不说，这个………… --------------------编程问答-------------------- http://download.csdn.net/detail/zhaozheng1988/3745384 --------------------编程问答-------------------- 是呀，你说的沥青路面管理系统具体要实现些什么功能呢？ --------------------编程问答--------------------
是不是 自己想的这么一个管理系统啊 --------------------编程问答-------------------- 你应该是大学生,要交作业任务了吧,不然张口就要代码
--------------------编程问答-------------------- 这个太专业自己想吧。 --------------------编程问答-------------------- 即使有现成也未必满足你的具体需求 --------------------编程问答-------------------- 去下载一个相似的系统，然后自己在改改 --------------------编程问答-------------------- 沥青路面管理系统是干什么的啊？ --------------------编程问答-------------------- 说实话 就是下不到模板 我只是要求满足增删改查 谢谢大家的回复
哎 这个 还是 想要个模板啊 --------------------编程问答-------------------- 需求明确，这类系统实现都不同小异 --------------------编程问答-------------------- 很简单的，当做毕业设计吧？ --------------------编程问答-------------------- 看些有关方面的书，参考一下吧 --------------------编程问答-------------------- 网上搜索下 你该系统的看下，找本书
给你贴一个书上的例子，没有修改更新
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Data.SqlClient;
namespace DatabaseDemo
{
public partial class Form1 : Form
{
SqlDataAdapter sqlDataAdapter1;
//存取数据库的主要类
SqlCommand sqlCommand1;
//SQL语句处理的类
SqlConnection sqlConnection1;
// 表示是否处于插入新记录的状态
private bool bNewRecord = false;
// 获取所有客户的ID
private void GetCustomID()
{
SqlDataReader sdr ;
sqlConnection1.Open(); // 打开连接
sdr=sqlCommand1.ExecuteReader(CommandBehavior.CloseConnection);
cbxID.Items.Clear();
while( sdr.Read() ){
// 把客户ID插入到组合框控件中
cbxID.Items.Add( sdr.GetValue(0) );
}
sdr.Close(); // 关闭SqlDataReader对象和数据库连接
cbxID.SelectedIndex = 0;
}
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
//SQL Server 登录机制
//String sConnString = "server=VS-LV;uid=sa;pwd=;database=Northwind";
// Windows 安全登录机制
String sConnString = "Data Source=Highill;Initial Catalog=Northwind;Integrated Security=True";
//SQL语句
String sSQL = "SELECT * FROM Customers";
//创建一个数据库连接对象
sqlConnection1 = new System.Data.SqlClient.SqlConnection(sConnString );
sqlCommand1 = new System.Data.SqlClient.SqlCommand(sSQL,sqlConnection1);
sqlCommand1.CommandText = "SELECT CustomerID FROM Customers ORDER BY CustomerID";
//创建一个SqlDataAdapter对象
sqlDataAdapter1=new SqlDataAdapter(sSQL,sqlConnection1);
// 创建一个DataSet对象
DataSet dataSet1=new DataSet();
sqlDataAdapter1.Fill(dataSet1, "Customers");
dataGridView1.DataSource = dataSet1.Tables["Customers"];
GetCustomID();
}
private void cbxID_SelectedIndexChanged(object sender, EventArgs e)
{
// 创建SQL命令对象
SqlCommand sqlcmd = new SqlCommand(
"SELECT * FROM Customers WHERE CustomerID = @ID",
sqlConnection1);
// 设置参数
sqlcmd.Parameters.AddWithValue("@ID", cbxID.Text);
SqlDataReader sdr;
sqlConnection1.Open();
sdr = sqlcmd.ExecuteReader();
if (sdr.Read())
{
// 使用不同的方式读取特定字段的值
txtCompanyName.Text = sdr.GetString(1);
txtContactName.Text = sdr["ContactName"].ToString();
txtContactTitle.Text = sdr[3].ToString();
txtAddress.Text = sdr.GetValue(4).ToString();
txtCity.Text = sdr["City"].ToString();
txtRegion.Text = sdr.GetValue(6).ToString();
txtPostalCode.Text = sdr[7].ToString();
txtCountry.Text = sdr[8].ToString();
txtPhone.Text = sdr[9].ToString();
txtFax.Text = sdr[10].ToString();
}
sdr.Close();
sqlConnection1.Close();
}
private void btnPrev_Click(object sender, EventArgs e)
{
if (cbxID.SelectedIndex > 0)
cbxID.SelectedIndex -= 1;
}
private void btnNext_Click(object sender, EventArgs e)
{
if (cbxID.SelectedIndex < cbxID.Items.Count - 1)
cbxID.SelectedIndex += 1;
}
private void btnOrder_Click(object sender, EventArgs e)
{
FormOrders orders = new FormOrders();
orders.CustomerID = cbxID.Text;
orders.ShowDialog();
}
private void btnNew_Click(object sender, EventArgs e)
{
txtCompanyName.Text = "";
txtContactName.Text = "";
txtContactTitle.Text = "";
txtAddress.Text = "";
txtCity.Text = "";
txtRegion.Text = "";
txtPostalCode.Text = "";
txtCountry.Text = "";
txtPhone.Text = "";
txtFax.Text = "";
cbxID.DropDownStyle = ComboBoxStyle.DropDown;
cbxID.Text = "";
bNewRecord = true;
}
private void btnDelete_Click(object sender, EventArgs e)
{
SqlCommand sqlcmd = new SqlCommand(
"DELETE FROM Customers WHERE CustomerID=@ID",
sqlConnection1);
sqlcmd.Parameters.AddWithValue("@ID", cbxID.Text);
try
{
sqlConnection1.Open();
int rowAffected = sqlcmd.ExecuteNonQuery();
if (rowAffected == 1)
cbxID.Items.RemoveAt(cbxID.SelectedIndex);
}
catch (SqlException ex)
{
MessageBox.Show("删除错误：" + ex.Message, "出现错误",
MessageBoxButtons.OK, MessageBoxIcon.Error);
}
finally
{
sqlConnection1.Close();
}
if (cbxID.SelectedIndex < cbxID.Items.Count - 1)
cbxID.SelectedIndex += 1;
}
private void btnSave_Click(object sender, EventArgs e)
{
string sqlStatement;
// 根据是否正在添加新记录来建立适当的查询语句
if (bNewRecord == true)
{
sqlStatement = "INSERT INTO Customers VALUES(" +
"'" + cbxID.Text + "'," +
"'" + txtCompanyName.Text + "'," +
"'" + txtContactName.Text + "'," +
"'" + txtContactTitle.Text + "'," +
"'" + txtAddress.Text + "'," +
"'" + txtCity.Text + "'," +
"'" + txtRegion.Text + "'," +
"'" + txtPostalCode.Text + "'," +
"'" + txtCountry.Text + "'," +
"'" + txtPhone.Text + "'," +
"'" + txtFax.Text + "')";
}
else
{
sqlStatement = "UPDATE Customers SET " +
"CompanyName='" + txtCompanyName.Text + "'," +
"ContactName='" + txtContactName.Text + "'," +
"ContactTitle='" + txtContactTitle.Text + "'," +
"Address='" + txtAddress.Text + "'," +
"City='" + txtCity.Text + "'," +
"Region='" + txtRegion.Text + "'," +
"PostalCode='" + txtPostalCode.Text + "'," +
"Country='" + txtCountry.Text + "'," +
"Phone='" + txtPhone.Text + "'," +
"Fax='" + txtFax.Text + "'" +
"WHERE CustomerID = '" + cbxID.Text + "'";
}
// 创建SQL命令
SqlCommand sqlcmd = new SqlCommand(
sqlStatement,
sqlConnection1);
try
{
sqlConnection1.Open();
int rowAffected = sqlcmd.ExecuteNonQuery();
if (rowAffected == 1)
cbxID.Items.Add(cbxID.Text);
}
catch (SqlException ex)
{
MessageBox.Show("更新错误：" + ex.Message, "出现错误",
MessageBoxButtons.OK, MessageBoxIcon.Error);
}
finally
{
sqlConnection1.Close();
}
if (bNewRecord == true)
{
cbxID.DropDownStyle = ComboBoxStyle.DropDownList;
bNewRecord = false;
cbxID.SelectedIndex = cbxID.Items.Count - 1;
}
}
}
}
修改更新差不多--前段时间试了试 你可以搜索下
补充：.NET技术 , C#
