Question

当我选择该日期时，我试图显示有关日期的记录。我已经填充了我的datagridview：

con = new SqlConnection("Data Source=.\\SQLEXPRESS;AttachDbFilename=\"C:\\Users\\Fakhar Zaman\\documents\\visual studio2010\\Projects\\LabManagement\\LabManagement\\Management.mdf\";Integrated Security=True;User Instance=True");

con.Open();
SqlDataAdapter adap = new SqlDataAdapter("select id, expenseTitle, expenseAmount, date, paidBy, expenseType from Expense", con);
DataSet ds = new System.Data.DataSet();
adap.Fill(ds, "Expense");
dataGridView2.DataSource = ds.Tables[0];

adap = new SqlDataAdapter("select id, date, itemName, quantity, itemSold, priceBuy, soldPrice, totalSold, profit from ItemRecord", con);
ds = new System.Data.DataSet();
adap.Fill(ds, "ItemRecord");
dataGridView1.DataSource = ds.Tables[0];

此代码工作正常并显示datagridview中的值。但是，当我想过滤特定日期的内容时，它不会这样做，而是再次显示完整的记录。过滤代码如下：

string plus = dateTimePicker1.Value.AddDays(1).ToString("yyyy-MM-dd");
string date = dateTimePicker1.Value.ToString("yyyy-MM-dd");
SqlDataAdapter adapter = new SqlDataAdapter();
adapter.SelectCommand = new SqlCommand("SELECT * FROM ItemRecord", con);
var dataset = new DataSet();
adapter.Fill(dataset);
//MessageBox.Show(plus +" , " + date);
this.itemRecordBindingSource.Filter = string.Format("date >= '{0:yyyy-MM-dd}' AND date < '{1:yyyy-MM-dd}'", date, plus);
//string date = dateTimePicker1.Value.ToString();

请建议我解决一下。

每当我使用自动生成的代码填充数据集时，它工作正常并过滤特定内容，但我需要以上代码       工作正常
        this.expenseTableAdapter.Fill(this.managementDataSet21.Expense);

        this.itemRecordTableAdapter.Fill(this.managementDataSet21.ItemRecord);*/

以下是表单的完整代码：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Data.SqlClient;

namespace LabManagement
{
    public partial class calculation : Form
    {

        SqlConnection con;



        public calculation()
        {
            InitializeComponent();

        }

        private void calculation_Load(object sender, EventArgs e)
        {
            con = new SqlConnection("Data Source=.\\SQLEXPRESS;AttachDbFilename=\"C:\\Users\\Fakhar Zaman\\documents\\visual studio 2010\\Projects\\LabManagement\\LabManagement\\Management.mdf\";Integrated Security=True;User Instance=True");
            con.Open();
            SqlDataAdapter adap = new SqlDataAdapter("select id, expenseTitle, expenseAmount, date, paidBy, expenseType from Expense", con);
            DataSet ds = new System.Data.DataSet();
            adap.Fill(ds, "Expense");
            dataGridView2.DataSource = ds.Tables[0];

            adap = new SqlDataAdapter("select id, date, itemName, quantity, itemSold, priceBuy, soldPrice, totalSold, profit from ItemRecord", con);
            ds = new System.Data.DataSet();
            adap.Fill(ds, "ItemRecord");
            dataGridView1.DataSource = ds.Tables[0];

            /*
            // TODO: This line of code loads data into the 'managementDataSet21.Expense' table. You can move, or remove it, as needed.
            this.expenseTableAdapter.Fill(this.managementDataSet21.Expense);
            // TODO: This line of code loads data into the 'managementDataSet21.ItemRecord' table. You can move, or remove it, as needed.
            this.itemRecordTableAdapter.Fill(this.managementDataSet21.ItemRecord);*/
            dateTimePicker1.MaxDate = DateTime.Today;
        }

        private void button1_Click(object sender, EventArgs e)
        {


           // this.itemRecordBindingSource.Filter = "date = '" + dateTimePicker1.Value.ToString() + "'"; 

            string plus = dateTimePicker1.Value.AddDays(1).ToString("yyyy-MM-dd");
            string date = dateTimePicker1.Value.ToString("yyyy-MM-dd");
            SqlDataAdapter adapter = new SqlDataAdapter();
            adapter.SelectCommand = new SqlCommand("SELECT * FROM ItemRecord Where date >='" + dateTimePicker1.Value.AddDays(1).ToString("yyyy-MM-dd") + "' AND date < '" + date + "'", con);
            //adapter.SelectCommand = new SqlCommand("SELECT * FROM ItemRecord", con);
            adapter.SelectCommand.BeginExecuteNonQuery();

            var dataset = new DataSet();
            adapter.Fill(dataset);
            //MessageBox.Show(plus +" , " + date);
           //this.itemRecordBindingSource.Filter = string.Format("date >= '{0:yyyy-MM-dd}' AND date < '{1:yyyy-MM-dd}'", date, plus);
            /*string date = dateTimePicker1.Value.ToString();
            */


            int sum = 0;
            for (int i = 0; i < dataGridView1.Rows.Count; ++i)
            {
                sum += int.Parse(dataGridView1.Rows[i].Cells[8].Value.ToString());
            }
            label2.Text = sum.ToString();




            ///// for expense table:

            SqlDataAdapter myadapter = new SqlDataAdapter();
            myadapter.SelectCommand = new SqlCommand("SELECT * FROM Expense Where date >='" + dateTimePicker1.Value.AddDays(1).ToString("yyyy-MM-dd") + "' AND date < '" + date + "'", con);
            //myadapter.SelectCommand = new SqlCommand("SELECT * FROM Expense", con);
            var expensedataset = new DataSet();
            myadapter.Fill(expensedataset);
            //MessageBox.Show(plus +" , " + date);
            //this.expenseBindingSource.Filter = string.Format("date >= '{0:yyyy-MM-dd}' AND date < '{1:yyyy-MM-dd}'", date, plus);
            /*string date = dateTimePicker1.Value.ToString();
            */

            sum = 0;
            for (int i = 0; i < dataGridView2.Rows.Count; ++i)
            {
                sum += int.Parse(dataGridView2.Rows[i].Cells[2].Value.ToString());
            }
            label3.Text = sum.ToString();


            int overall = int.Parse(label2.Text) - int.Parse(label3.Text);
            label5.Text = "Overall profit for date " + dateTimePicker1.Value.ToString("dd-MM-yyyy") +" =      Rs." + overall.ToString() ;


            /*string namequery = "SELECT itemName from ItemRecord where date = '" + date +"'";
            string itemname;
            using (var command = new SqlCommand(namequery, con))
            {
                command.Parameters.AddWithValue("@Parameter", 5);
                con.Open();
                itemname = (string)command.ExecuteScalar();
                con.Close();
            }
            */

        }

        private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e)
        {

        }

        private void dateTimePicker1_ValueChanged(object sender, EventArgs e)
        {

        }

        private void label2_Click(object sender, EventArgs e)
        {

        }

        private void label6_Click(object sender, EventArgs e)
        {

        }

        private void button2_Click(object sender, EventArgs e)
        {
            this.Hide();
            Form1 frm = new Form1();
            frm.ShowDialog();
            this.Close();

        }

        private void Form2_FormClosed(object sender, FormClosedEventArgs e)
        {
            Application.Exit();

        }
    }
}

Answer 1

当您再次呼叫DB时，为什么不选择那些满足您日期检查的记录。看一下修改后的select命令。

SqlCommand sqlcmd = new SqlCommand("SELECT * FROM ItemRecord Where date >='"+dateTimePicker1.Value.AddDays(1).ToString("yyyy-MM-dd")+"' AND date < '"+date+"'" , con);
SqlDataAdapter adapter = new SqlDataAdapter(sqlcmd);
adapter.Fill(yourDataSource);

希望它有所帮助。如果你想要别的东西，请记下来。

Answer 2

我不确定是否有必要在代码显示时过滤数据。您可以简单地将行过滤器应用于当前DataTable，而不是从原始数据库中过滤/选择。假设您要过滤数据以显示两个日期之间的所有日期。使用两个文本框，用户在一个文本框中键入第一个开始日期，然后在第二个文本框中键入结束的第二个日期。用户点击“过滤器”按钮过滤DataTable，仅显示这两个日期之间的日期。如果用户清除文本框并单击过滤器按钮，则将显示原始未过滤的数据。希望这会有所帮助。

DataTable dt;
public Form1() {
  InitializeComponent();
  dt = GetYourDataTable();
  dataGridView1.DataSource = dt;
}

private void buttonFilter_Click(object sender, EventArgs e) {
  if (tbDate1.Text == "" || tbDate2.Text == "") {
    dt.DefaultView.RowFilter = "";
  }
  else {
    DateTime sDate;
    DateTime eDate;
    if ((DateTime.TryParse(tbDate1.Text, out sDate)) && (DateTime.TryParse(tbDate2.Text, out eDate))) {
      dt.DefaultView.RowFilter = string.Format("Date >= #" + sDate + "# AND Date <= #" + eDate + "#");
    }
  }
}

Answer 3

在Button1_Click adapter.Fill(dataset);行

之后添加此行

adapter.Fill(dataset, "ItemRecord");
dataGridView1.DataSource = dataset.Tables["ItemRecord"];

C＃datagridview过滤器中的错误特定内容

3 个答案: