我已经接管了某人的计划。所以这是我第一次处理DataViewGrid。
数据完美填充。当用户选择一行时，它会填充表单中的文本框。我不确定那部分是如何工作的，因为没有任何说法
txtEmail.text =
或在此表单中的任何位置选择行。但是没关系......如果它有效，我会处理。
这是我的问题。我添加了一个过滤器。这很棒。在您键入时，它会过滤匹配的每一行。
private void txtSearch_TextChanged(object sender, EventArgs e)
{
DataView dv = new DataView(this.dsFavoritesList.gryFavoritesList);
dv.Sort = "Name ASC";
dv.RowFilter = string.Format("Name LIKE '%{0}%'",txtSearch.Text);
dataGridView1.DataSource = dv;
}
但现在只要在过滤器中输入任何内容，选中的任何行都不会填充文本框。直到我重新加载整个表单，我才能再次正确选择任何内容。
如果我开始明白......我已经更新了gridview而不是源代码......我只是不知道如何。
谢谢！ -Matt
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.OleDb;
using System.IO;
using Ini;
using System.Configuration;
using System.Threading;
namespace UpLoadImages
{
public partial class CopyFavorites : Form
{
public CopyFavorites()
{
InitializeComponent();
}
private void CopyFavorites_Load(object sender, EventArgs e)
{
try
{
// get the default values
string appPath = Path.GetDirectoryName(Application.ExecutablePath);
IniFile ini = new IniFile(string.Format(@"{0}\gift.ini", appPath));
txtEventsDrive.Text = ini.IniReadValue("Info", "LocationOfEvents");
txtHiResTarget.Text = ini.IniReadValue("Info", "FavWorkSpace");
this.StartPosition = FormStartPosition.CenterScreen;
oleDbConnection1.ConnectionString = ConfigurationSettings.AppSettings["ConnectionString"];
backgroundWorker1.RunWorkerAsync();
//commented out so we can try it as a background worker
// TODO: This line of code loads data into the 'dsFavoritesList.gryFavoritesList' table. You can move, or remove it, as needed.
//this.gryFavoritesListTableAdapter.Fill(this.dsFavoritesList.gryFavoritesList);
ProgressPanel.Visible = false;
txtSearch.Focus();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
private void btnCopy_Click(object sender, EventArgs e)
{
this.MdiParent.MainMenuStrip.Enabled = false;
try
{
string strError = CopyImages();
StringBuilder sql = new StringBuilder();
sql.AppendFormat("UPDATE FavoritesHeader SET FavoritesHeader.FilesCopied = {0} ", Convert.ToInt32(txtImagesCopied.Text));
sql.AppendFormat("WHERE FavoritesHeader.EmailAddress='{0}'", txtEmail.Text);
UpdateDatabase(sql.ToString());
this.gryFavoritesListTableAdapter.Fill(this.dsFavoritesList.gryFavoritesList);
MessageBoxButtons buttons = MessageBoxButtons.OK;
MessageBox.Show(this, strError, "Copy Images", buttons, MessageBoxIcon.Information, MessageBoxDefaultButton.Button1);
ProgressPanel.Visible = false;
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
finally
{
this.MdiParent.MainMenuStrip.Enabled = true;
}
}
private string CopyAllImages()
{
StringBuilder strError = new StringBuilder();
string clr = "\r\n";
strError.AppendFormat("Time started: {0}{1}{1}", DateTime.Now.ToLongTimeString(), clr);
try
{
StringBuilder str = new StringBuilder();
str.AppendFormat("Select FavoritesHeader.EmailAddress, StrConv([LastName],1)+'_'+StrConv([firstname],3) AS Folder, FavoritesDetail.ImagePath,MainEvents.MainEventCode, ");
str.AppendFormat("FavoritesDetail.ImageName FROM (FavoritesHeader INNER JOIN MainEvents ON FavoritesHeader.MainEventID = MainEvents.MainEventID) ");
str.AppendFormat("LEFT JOIN FavoritesDetail ON FavoritesHeader.FavoritesHeaderID = FavoritesDetail.FavoritesHeaderID ");
str.AppendFormat(" WHERE (((MainEvents.isActive)=1)) ");
str.AppendFormat(" ORDER BY FavoritesHeader.EmailAddress, StrConv([LastName],1)+'_'+StrConv([firstname],3), FavoritesDetail.ImagePath");
DataTable dt_Images = GetDataTable(str.ToString());
int maxFiles = dt_Images.Rows.Count;
strError.AppendFormat("Images to copy: {0}{1}{1}", maxFiles, clr);
Application.DoEvents();
progressBar.Maximum = maxFiles;
progressBar.Value = 0;
ProgressPanel.Visible = true;
string strTarget = string.Empty;
int i = 0;
foreach (DataRow row in dt_Images.Rows)
{
i = i + 1;
progressBar.Value = i;
ProgressCount.Text = string.Format("Files Copied: {0} of {1}", i, maxFiles);
Application.DoEvents();
string path = row["ImagePath"] as string;
path = path.Replace(@"Thumbs", @"Preview");
//string folder = row["Folder"].ToString().Replace("@", "_").Replace(".", "_");
string folder = row["Folder"].ToString();//.Replace("@", "_").Replace(".", "_");
strTarget = string.Format(@"{0}\Favorites_{1}\{2}", txtHiResTarget.Text, row["MainEventCode"] as string, folder);
if (!System.IO.Directory.Exists(strTarget))
{
// create the directory
System.IO.Directory.CreateDirectory(strTarget);
}
string destFileName = string.Format(@"{0}\{1}", strTarget, row["ImageName"] as string);
string sourceFileName = string.Format(@"{0}\{1}", txtEventsDrive.Text, path);
sourceFileName = sourceFileName.Replace(@"/", @"\");
sourceFileName = sourceFileName.Replace(@"\\", @"\");
try
{
System.IO.File.Copy(sourceFileName, destFileName,true);
}
catch (Exception ex)
{
strError.AppendFormat("{0}{1}{1}", ex.Message, clr);
}
}
//DirectoryInfo dir3 = new DirectoryInfo(strTarget);
//txtImagesCopied.Text = Convert.ToString(dir3.GetFiles("*.jpg").Length);
//strError.AppendFormat("Images in destination: {0}{1}{1}", txtImagesCopied.Text, clr);
strError.AppendFormat("Time Ended: {0}{1}{1}", DateTime.Now.ToLongTimeString(), clr);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
return strError.ToString();
}
private string CopyImages()
{
StringBuilder strError = new StringBuilder();
string clr = "\r\n";
strError.AppendFormat("Time started: {0}{1}{1}", DateTime.Now.ToLongTimeString(), clr);
try
{
StringBuilder str = new StringBuilder();
str.AppendFormat("SELECT FavoritesHeader.EmailAddress, MainEvents.MainEventCode, FavoritesDetail.ImagePath, ");
str.AppendFormat("FavoritesDetail.ImageName FROM (FavoritesHeader LEFT JOIN FavoritesDetail ON ");
str.AppendFormat("FavoritesHeader.FavoritesHeaderID = FavoritesDetail.FavoritesHeaderID) INNER JOIN ");
str.AppendFormat(" MainEvents ON FavoritesHeader.MainEventID = MainEvents.MainEventID WHERE ");
str.AppendFormat(" FavoritesHeader.EmailAddress='{0}' AND MainEvents.isActive=1", txtEmail.Text);
DataTable dt_Images = GetDataTable(str.ToString());
int maxFiles = dt_Images.Rows.Count;
strError.AppendFormat("Images to copy: {0}{1}{1}", maxFiles, clr);
Application.DoEvents();
progressBar.Maximum = maxFiles;
progressBar.Value = 0;
ProgressPanel.Visible = true;
string strTarget = string.Empty;
int i = 0;
int AlreadyExists = -1;
int ExistsIndex = 0;
foreach (DataRow row in dt_Images.Rows)
{
i = i + 1;
progressBar.Value = i;
ProgressCount.Text = string.Format("Files Copied: {0} of {1}", i, maxFiles);
Application.DoEvents();
string path = row["ImagePath"] as string;
path = path.Replace(@"Thumbs", @"HiRes");
string eMail = txtEmail.Text.ToString().Replace("@", "_").Replace(".", "_");
strTarget = string.Format(@"{0}\{1}_MainEvent\FavoriteCD\{2}", txtHiResTarget.Text, row["MainEventCode"] as string, eMail);
if (!System.IO.Directory.Exists(strTarget))
{
// create the directory
System.IO.Directory.CreateDirectory(strTarget);
}
string destFileName = string.Format(@"{0}\{1}", strTarget, row["ImageName"] as string);
string sourceFileName = string.Format(@"{0}\{1}", txtEventsDrive.Text, path);
sourceFileName = sourceFileName.Replace(@"/", @"\");
//sourceFileName = sourceFileName.Replace(@"\\", @"\");
try
{
System.IO.File.Copy(sourceFileName, destFileName);
}
catch (Exception ex)
{
AlreadyExists = (strError.ToString()).IndexOf("already exists");
if (AlreadyExists == -1)
{
strError.AppendFormat("{0}{1}{1}", ex.Message, clr);
}
else
{
ExistsIndex = ExistsIndex + AlreadyExists;
}
}
}
if (ExistsIndex > 0)
{
strError.AppendFormat("Some files were copied previously{0}", clr);
}
DirectoryInfo dir3 = new DirectoryInfo(strTarget);
txtImagesCopied.Text = Convert.ToString(dir3.GetFiles("*.jpg").Length);
strError.AppendFormat("Images in destination: {0}{1}{1}", txtImagesCopied.Text, clr);
strError.AppendFormat("Time Ended: {0}{1}{1}", DateTime.Now.ToLongTimeString(), clr);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
return strError.ToString();
}
private void UpdateDatabase(string sql)
{
OleDbConnection sqlConnNew = new OleDbConnection();
sqlConnNew.ConnectionString = oleDbConnection1.ConnectionString;
sqlConnNew.Open();
OleDbCommand oleCMD = new OleDbCommand();
oleCMD.Connection = sqlConnNew;
OleDbTransaction oleTrans = oleCMD.Connection.BeginTransaction();
oleCMD.Transaction = oleTrans;
oleCMD.CommandText = sql;
try
{
oleCMD.ExecuteNonQuery();
oleTrans.Commit();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
oleCMD.Connection.Close();
oleCMD.Dispose();
}
public DataTable GetDataTable(string sql)
{
DataTable RS = new DataTable();
try
{
OleDbConnection sqlConnNew = new OleDbConnection();
sqlConnNew.ConnectionString = oleDbConnection1.ConnectionString;
sqlConnNew.Open();
OleDbCommand oleCMD = new OleDbCommand(sql, sqlConnNew);
OleDbDataAdapter oleAdr = new OleDbDataAdapter(oleCMD);
oleAdr.AcceptChangesDuringFill = true;
oleAdr.Fill(RS);
oleCMD.Connection.Close();
oleCMD.Dispose();
}
catch (System.Exception ex)
{
MessageBox.Show(ex.Message);
}
return RS;
}
private void SaveDefaults_Click(object sender, EventArgs e)
{
try
{
// get the application path to find the ini file
string appPath = Path.GetDirectoryName(Application.ExecutablePath);
IniFile ini = new IniFile(string.Format(@"{0}\gift.ini", appPath));
ini.IniWriteValue("Info", "LocationOfEvents", txtEventsDrive.Text);
ini.IniWriteValue("Info", "FavWorkSpace", txtHiResTarget.Text);
MessageBox.Show("Defaults settings have been saved.", "Save Defaults");
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
private void Exit_Click(object sender, EventArgs e)
{
Application.Exit();
}
private void About_Click(object sender, EventArgs e)
{
AboutBox MyAboutBox = new AboutBox();
MyAboutBox.ShowDialog();
}
private void getInvoiceToolStripMenuItem_Click(object sender, EventArgs e)
{
this.Hide();
GetInvoice getInvoice = new GetInvoice();
getInvoice.ShowDialog();
}
private void processImagesToolStripMenuItem_Click(object sender, EventArgs e)
{
this.Hide();
ProcessImages processImages = new ProcessImages();
processImages.ShowDialog();
}
private void btnRefresh_Click(object sender, EventArgs e)
{
lblLoadingData.Visible = true;
this.gryFavoritesListTableAdapter.Fill(this.dsFavoritesList.gryFavoritesList);
dataGridView1.Refresh();
}
private void txtSearch_TextChanged(object sender, EventArgs e)
{
DataView dv = new DataView(this.dsFavoritesList.gryFavoritesList);
dv.Sort = "Name ASC";
dv.RowFilter = string.Format("Name LIKE '%{0}%'",txtSearch.Text);
dataGridView1.DataSource = dv;
//if (index == -1)
//{
// MessageBox.Show("No PK matches " + txtSearch.Text);
//}
//else
//{
// dataGridView1.FirstDisplayedScrollingRowIndex = index;
// dataGridView1.Refresh();
// dataGridView1.CurrentCell = dataGrid.Rows[index].Cells[0];
// dataGridView1.Rows[index].Selected = true;
//dataGridView1.CurrentRowIndex = intRow;
//dataGridView1.Select(intRow);
//}
}
private void btnExport_Click(object sender, EventArgs e)
{
this.MdiParent.MainMenuStrip.Enabled = false;
try
{
string strError = CopyAllImages();
MessageBoxButtons buttons = MessageBoxButtons.OK;
MessageBox.Show(this, strError, "Copy All Favorites", buttons, MessageBoxIcon.Information, MessageBoxDefaultButton.Button1);
ProgressPanel.Visible = false;
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
finally
{
this.MdiParent.MainMenuStrip.Enabled = true;
}
}
private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
{
try
{
this.gryFavoritesListTableAdapter.Fill(this.dsFavoritesList.gryFavoritesList);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
{
lblLoadingData.Visible = false;
}
}
}
答案 0 :(得分：1)
验证测试来处理事件而不是TextBox TextChanged事件，因为每次插入一个字符都被称为事件，而你在使用Validated时实际执行了txtsearch的验证。
private void txtSearch_Vlidated(object sender, EventArgs e)
{
DataView dv = new DataView(this.dsFavoritesList.gryFavoritesList);
dv.Sort = "Name ASC";
dv.RowFilter = string.Format("Name LIKE '%{0}%'",txtSearch.Text);
dataGridView1.DataSource = dv;
}
问候。