我有一个包含两个DataGridViews的表单。选择一个网格上的行过滤并显示第二个网格中的相关行。现在，当我单击以在第二个网格中添加或编辑行时，将出现对话框表单，并在第一个网格中的选择之后立即重置为第一行。为什么会发生这种情况，我该如何预防呢？我没能在网上找到这方面的东西。
当我在第二个网格上单击“编辑”按钮时会发生这种情况。 p.s。：grid 1 - currencyGrid，grid 2 - ratesGrid。当出现编辑对话框时，它会向右行传递，但在第一个网格的currentRow立即变为第一行之后。
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Data.Sql;
using System.Data.SqlClient;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Globalization;
using System.Xml;
using System.Threading;
namespace ProjectPro
{
public partial class CurrenciesAndRates : Form
{
public CurrenciesAndRates()
{
InitializeComponent();
this.WindowState = FormWindowState.Minimized;
this.WindowState = FormWindowState.Maximized;
}
private void CurrenciesAndRates_Load(object sender, EventArgs e)
{
DAL dal = new DAL();
//load Currencies table
//load CurrencyRates table
try
{
dal.GetData("Currencies");
dal.GetData("CurrencyRates");
this.currencyGrid.DataSource = StaticValues.dataSet.Tables["Currencies"];
if(this.currencyGrid.Rows.Count > 0)
{
this.currencyGrid.Rows[0].Selected = true;
}
}
catch (Exception ex)
{
StaticValues.WriteEventLogXML(ex, this.Text);
switch (StaticValues.user.Language)
{
case "English":
MessageBox.Show("Database error", Application.ProductName, MessageBoxButtons.OK, MessageBoxIcon.Error);
break;
case "Russian":
MessageBox.Show("Ошибка базы данных", Application.ProductName, MessageBoxButtons.OK, MessageBoxIcon.Error);
break;
case "Azeri":
MessageBox.Show("Məlumat bazası səhvi", Application.ProductName, MessageBoxButtons.OK, MessageBoxIcon.Error);
break;
default:
break;
}
}
}
private void currenciesGrid_DataBindingComplete(object sender, DataGridViewBindingCompleteEventArgs e)
{
}
private void dateTimePicker1_ValueChanged(object sender, EventArgs e)
{
DAL dal = new DAL();
try
{
dal.GetData("Currencies");
dal.GetData("CurrencyRates");
dal.GetCurrencyRatesAtDate(dateTimePicker1.Value);
}
catch (Exception ex)
{
StaticValues.WriteEventLogXML(ex, this.Text);
switch (StaticValues.user.Language)
{
case "English":
MessageBox.Show("Database error", Application.ProductName, MessageBoxButtons.OK, MessageBoxIcon.Error);
break;
case "Russian":
MessageBox.Show("Ошибка базы данных", Application.ProductName, MessageBoxButtons.OK, MessageBoxIcon.Error);
break;
case "Azeri":
MessageBox.Show("Məlumat bazası səhvi", Application.ProductName, MessageBoxButtons.OK, MessageBoxIcon.Error);
break;
default:
break;
}
}
}
private void currencyGrid_CellClick(object sender, DataGridViewCellEventArgs e)
{
switch(StaticValues.user.Language)
{
case "English":
historyForLab.Text = "History for " + currencyGrid.CurrentRow.Cells["Code"].Value.ToString() + ":";
break;
case "Russian":
historyForLab.Text = "История по " + currencyGrid.CurrentRow.Cells["Code"].Value.ToString() + ":";
break;
case "Azeri":
historyForLab.Text = currencyGrid.CurrentRow.Cells["Code"].Value.ToString() + " üzrə tarixçə:";
break;
default:
break;
}
DataView dv = StaticValues.dataSet.Tables["CurrencyRates"].DefaultView;
dv.RowFilter = "CurrencyID = '" + currencyGrid.CurrentRow.Cells["ID"].Value.ToString() + "'";
dv.Sort = "Date DESC";
this.ratesGrid.DataSource = dv;
this.ratesGrid.Columns[0].Visible = false;
this.ratesGrid.Columns[2].Visible = false;
StaticValues.LocalizeGrid(this.ratesGrid, "CurrencyRates");
}
private void currencyGrid_DataBindingComplete(object sender, DataGridViewBindingCompleteEventArgs e)
{
if(!currencyGrid.Columns.Contains("Rate"))
currencyGrid.Columns.Add("Rate", "Rate");
foreach (DataGridViewRow currencyRow in currencyGrid.Rows)
{
foreach (DataRow row in StaticValues.dataSet.Tables["CurrencyRates"].Rows)
{
if (row["CurrencyID"].ToString() == currencyRow.Cells["ID"].Value.ToString() &&
DateTime.Parse(row["Date"].ToString()).ToShortDateString() == dateTimePicker1.Value.ToShortDateString())
{
currencyRow.Cells["Rate"].Value = row["Rate"].ToString();
break;
}
}
}
}
private void GetCurrentRatesFromCBAR()
{
string url = "http://cbar.az/currencies/" + DateTime.Now.ToString("dd.MM.yyyy", CultureInfo.InvariantCulture) + ".xml";
try
{
XmlDocument doc = new XmlDocument();
doc.Load(url);
XmlElement root = doc.DocumentElement;
XmlNodeList nodes = root.SelectNodes("//ValCurs/ValType");
DataTable tempRates = new DataTable();
foreach (XmlNode node in nodes)
{
if (node.Attributes["Type"].Value == "Xarici valyutalar")
{
//create temp table and load new rates
tempRates.Clear();
tempRates.Columns.Add("Code");
tempRates.Columns.Add("Nominal");
tempRates.Columns.Add("Name");
tempRates.Columns.Add("Value");
foreach (XmlNode currency in node.ChildNodes)
{
DataRow dr = tempRates.NewRow();
dr["Code"] = currency.Attributes["Code"].Value;
foreach (XmlNode currencyDetailsNode in currency.ChildNodes)
{
dr[currencyDetailsNode.Name] = currencyDetailsNode.InnerText;
}
tempRates.Rows.Add(dr);
}
}
}
//write new rates to the database
///delete records in Rates table with the current date
DAL dal = new DAL();
dal.ClearCurrentRates(DateTime.Now);
//insert new values
foreach (DataRow currencyRow in StaticValues.dataSet.Tables["Currencies"].Rows)
{
if(currencyRow["Code"].ToString() == "AZN")
{
#region Insert the row for AZN
try
{
SqlParameter[] pars = new SqlParameter[3];
pars[0] = new SqlParameter("@Date", SqlDbType.Date);
pars[0].Value = DateTime.Now.Date.ToShortDateString();
pars[1] = new SqlParameter("@CurrencyID", SqlDbType.Int);
pars[1].Value = currencyRow["ID"].ToString();
pars[2] = new SqlParameter("@Rate", SqlDbType.Decimal);
pars[2].Value = 1.0000;
dal.InsertData("CurrencyRates", pars);
}
catch (Exception ex)
{
StaticValues.WriteEventLogXML(ex, this.Text);
switch (StaticValues.user.Language)
{
case "English":
MessageBox.Show("Database error", Application.ProductName, MessageBoxButtons.OK, MessageBoxIcon.Error);
break;
case "Russian":
MessageBox.Show("Ошибка базы данных", Application.ProductName, MessageBoxButtons.OK, MessageBoxIcon.Error);
break;
case "Azeri":
MessageBox.Show("Məlumat bazası səhvi", Application.ProductName, MessageBoxButtons.OK, MessageBoxIcon.Error);
break;
default:
break;
}
}
#endregion
continue;
}
foreach (DataRow tempRow in tempRates.Rows)
{
if (tempRow["Code"].ToString() == currencyRow["Code"].ToString())
{
#region Insert the row
try
{
SqlParameter[] pars = new SqlParameter[3];
pars[0] = new SqlParameter("@Date", SqlDbType.Date);
pars[0].Value = DateTime.Now.Date.ToShortDateString();
pars[1] = new SqlParameter("@CurrencyID", SqlDbType.Int);
pars[1].Value = currencyRow["ID"].ToString();
pars[2] = new SqlParameter("@Rate", SqlDbType.Decimal);
pars[2].Value = decimal.Parse(tempRow["Value"].ToString(), CultureInfo.InvariantCulture);
dal.InsertData("CurrencyRates", pars);
break;
}
catch (Exception ex)
{
StaticValues.WriteEventLogXML(ex, this.Text);
switch (StaticValues.user.Language)
{
case "English":
MessageBox.Show("Database error", Application.ProductName, MessageBoxButtons.OK, MessageBoxIcon.Error);
break;
case "Russian":
MessageBox.Show("Ошибка базы данных", Application.ProductName, MessageBoxButtons.OK, MessageBoxIcon.Error);
break;
case "Azeri":
MessageBox.Show("Məlumat bazası səhvi", Application.ProductName, MessageBoxButtons.OK, MessageBoxIcon.Error);
break;
default:
break;
}
break;
}
#endregion
}
}
}
this.CurrenciesAndRates_Load(this, null);
}
catch (Exception ex)
{
StaticValues.WriteEventLogXML(ex, this.Text);
switch (StaticValues.user.Language)
{
case "English":
MessageBox.Show("XML error", Application.ProductName, MessageBoxButtons.OK, MessageBoxIcon.Error);
break;
case "Russian":
MessageBox.Show("Ошибка XML", Application.ProductName, MessageBoxButtons.OK, MessageBoxIcon.Error);
break;
case "Azeri":
MessageBox.Show("XML səhvi", Application.ProductName, MessageBoxButtons.OK, MessageBoxIcon.Error);
break;
default:
break;
}
}
}
private void getTodaysRatesToolStripMenuItem_Click(object sender, EventArgs e)
{
this.GetCurrentRatesFromCBAR();
}
private void getRatesForAPeriodToolStripMenuItem_Click(object sender, EventArgs e)
{
GetRatesForPeriod getRates = new GetRatesForPeriod();
getRates.ShowDialog();
}
private void getRatesToolStripSplitButton_ButtonClick(object sender, EventArgs e)
{
getRatesToolStripSplitButton.ShowDropDown();
}
private void gridDtp_ValueChanged(object sender, EventArgs e)
{
ratesGrid.CurrentCell.Value = gridDtp.Value.Date;
gridDtp.Visible = false;
}
private void addRateBut_Click(object sender, EventArgs e)
{
string id = this.currencyGrid.CurrentRow.Cells[1].Value.ToString();
if (this.currencyGrid.CurrentRow != null)
{
AddEditRates rate = new AddEditRates(this.currencyGrid.CurrentRow.Cells[2].Value.ToString(), false, null, this, this.currencyGrid.CurrentCell.OwningColumn.Index, this.currencyGrid.CurrentRow.Index);
if (rate.ShowDialog() == System.Windows.Forms.DialogResult.OK)
{
}
}
}
private void editRateBut_Click(object sender, EventArgs e)
{
if(this.ratesGrid.CurrentRow != null)
{
AddEditRates rate = new AddEditRates(this.currencyGrid.CurrentRow.Cells[2].Value.ToString(), true, this.ratesGrid.CurrentRow, this, this.currencyGrid.CurrentCell.OwningColumn.Index, this.currencyGrid.CurrentRow.Index);
if(rate.ShowDialog() == System.Windows.Forms.DialogResult.OK)
{
}
}
}
private void CurrenciesAndRates_FormClosing(object sender, FormClosingEventArgs e)
{
MainForm parent = (MainForm)this.MdiParent;
if (parent.mdiChildList.Items.Contains(this.Text))
{
parent.mdiChildList.Items.Remove(this.Text);
}
}
private void CurrenciesAndRates_Activated(object sender, EventArgs e)
{
MainForm parent = (MainForm)this.MdiParent;
for (int i = 0; i < parent.mdiChildList.Items.Count; i++)
{
if (parent.mdiChildList.Items[i].ToString() == this.Text)
{
parent.mdiChildList.SelectedIndex = i;
break;
}
}
}
}
}
这是对话框表单的代码，它被调用＆＃39; add＆＃39;和＆＃39;编辑＆＃39;：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace ProjectPro
{
public partial class AddEditRates : Form
{
public AddEditRates(string currencyCode, bool isEdit, DataGridViewRow currentRow, CurrenciesAndRates form, int colIndex, int rowIndex)
{
InitializeComponent();
this.edit = isEdit;
this.row = currentRow;
this.currency = currencyCode;
this.parentForm = form;
foreach(DataGridViewRow row in parentForm.currencyGrid.Rows)
{
if(row.Cells[2].Value.ToString() == this.currency)
{
this.parentForm.currencyGrid.ClearSelection();
row.Selected = true;
break;
}
}
this.Text = StaticValues.SetCaption(this.Text, this.edit);
}
bool edit;
DataGridViewRow row;
string currency;
CurrenciesAndRates parentForm;
private void AddEditRates_Load(object sender, EventArgs e)
{
// set values for the fields
if (this.edit)
{
this.date.Value = DateTime.Parse(this.row.Cells[1].Value.ToString(), Application.CurrentCulture);
this.rateTB.Text = this.row.Cells[3].Value.ToString();
}
else
this.date.Value = DateTime.Today;
try
{
DAL dal = new DAL();
dal.GetData("Currencies");
//populate currencies comboBox
if (StaticValues.dataSet.Tables.Contains("Currencies"))
{
currencyCB.DataSource = StaticValues.dataSet.Tables["Currencies"];
currencyCB.DisplayMember = "Code";
}
this.currencyCB.Text = this.currency;
}
catch (Exception ex)
{
StaticValues.WriteEventLogXML(ex, this.Text);
switch (StaticValues.user.Language)
{
case "English":
MessageBox.Show("Database error", Application.ProductName, MessageBoxButtons.OK, MessageBoxIcon.Error);
break;
case "Russian":
MessageBox.Show("Ошибка базы данных", Application.ProductName, MessageBoxButtons.OK, MessageBoxIcon.Error);
break;
case "Azeri":
MessageBox.Show("Məlumat bazası səhvi", Application.ProductName, MessageBoxButtons.OK, MessageBoxIcon.Error);
break;
default:
break;
}
}
}
private void cancelBut_Click(object sender, EventArgs e)
{
this.Close();
}
}
}
答案 0 :(得分：0)
这是我的错误......我发现我从对话框表单重新加载了表格，该表格实际上是我的第一个网格的数据源，因此网格已更新并重新渲染。