【winform】主窗体多线程给子窗体传值
0.委托窗体传值
1.主窗体多线程给子窗体传值（多线程）
解决方案：主要使用委托，因为会出现跨线程错误
主窗体
public FormMain()
{
InitializeComponent();
//background thread running
Action sAction = async () => await CallbackWorkItem();
System.Threading.Tasks.Task task = System.Threading.Tasks.Task.Run(sAction);
System.Threading.Tasks.Task.WaitAll(task);
}
private async Task CallbackWorkItem()
{
List<string> filesGuidList = new List<string>(); //the GUID to download
while (true)
{
try
{
int count = int.Parse(COUNT);
if (string.IsNullOrWhiteSpace(DOWNPATH))
{
MessageBox.Show("the config's key for DOWNPATH is empty.");
return;
}
if (!string.IsNullOrWhiteSpace(PROJECTID) && !string.IsNullOrWhiteSpace(HOID))
{
filesGuidList.Clear();
//1.Check
bool checkTask = await CheckIds(Guid.Parse(PROJECTID), Guid.Parse(HOID));
if (checkTask)
{
deliveryFile.SetMonitor(deliveryFile,"download begins.", COUNT);
//2.Load
var files = await LoadDeliveryFiles(Guid.Parse(PROJECTID), Guid.Parse(HOID), TEMPKEY, count);
if (count == 1)
{
deliveryFile.SetMonitor(deliveryFile,$"download the data: {files[0].Name}", COUNT);
}
else
{
deliveryFile.SetMonitor(deliveryFile,$"download the {COUNT} data.", COUNT);
}
foreach (var file in files)
{
filesGuidList.Add(file.Guid.ToString());
}
string fileZipName = string.Empty;
//3.download
if (DownloadFile(Guid.Parse(PROJECTID), filesGuidList, out fileZipName))
{
DeleteRedis(Guid.Parse(PROJECTID), filesGuidList, fileZipName, TEMPKEY);
deliveryFile.SetMonitor(deliveryFile,"end of download.", COUNT);
}
}
else
{
deliveryFile.SetMonitor(deliveryFile,"no download data.", COUNT);
await Task.Delay(1000);
}
}
deliveryFile.SetMonitor(deliveryFile,"rest 7 seconds...", COUNT);
await Task.Delay(7000);
}
catch (FormatException e)
{
MessageBox.Show("the config's key for PROJECTID or HOID must be GUID,and COUNT must be number.");
await Task.Delay(60000); //if throw exception,re-execute after 60 seconds
}
catch (Exception e)
{
MessageBox.Show(e.Message);
await Task.Delay(60000); //if throw exception,re-execute after 60 seconds
}
}
}
FileDeliveryFile.cs
public partial class FormDeliveryFile : Form
{
public delegate void FileUpdateStatus(Control control, string monitor, string count);
}
public void SetMonitor(Control control, string monitor, string count)
{
if (control.InvokeRequired)
{
//direct access to controls across threads-跨线程直接访问控件 - InvokeRequired
FileUpdateStatus update = new FileUpdateStatus(SetMonitor);
control.Invoke(update, new object[] { control, monitor, count });
}
else
{
this.txtMonitor.Text = monitor;
this.txtMonitorSetCount.Text = count;
this.txtMonitor.ForeColor = Color.Brown;
this.txtMonitorSetCount.ForeColor = Color.Brown;
this.dataGridView1.DataSource = LoadPath();
this.dataGridView1.Columns[1].AutoSizeMode = DataGridViewAutoSizeColumnMode.AllCells; //自适应列宽
this.dataGridView1.Columns[1].DefaultCellStyle = new DataGridViewCellStyle() { ForeColor = Color.Blue, Font = new Font("Arial", 11F) }; //样式
this.dataGridView1.SelectionMode = DataGridViewSelectionMode.FullRowSelect;
this.dataGridView1.ReadOnly = true;
if (this.dataGridView1.FirstDisplayedScrollingRowIndex > -1)
{
this.dataGridView1.FirstDisplayedScrollingRowIndex = VerticalScrollIndex;//设置垂直滚动条位置
// this.dataGridView1.CurrentCell = this.dataGridView1.Rows[rowIndex].Cells[0];
}
}
}
2.datagridview 滚动时位置不变
if (this.dataGridView1.FirstDisplayedScrollingRowIndex > -1)
{
this.dataGridView1.FirstDisplayedScrollingRowIndex = VerticalScrollIndex;//设置垂直滚动条位置
this.dataGridView1.CurrentCell = this.dataGridView1.Rows[rowIndex].Cells[0];
}
Scroll事件
private void dataGridView1_Scroll(object sender, ScrollEventArgs e)
{
try
{
if (e.ScrollOrientation == ScrollOrientation.VerticalScroll)
{
VerticalScrollIndex = e.NewValue;
}
else if (e.ScrollOrientation == ScrollOrientation.HorizontalScroll)
{
HorizontalOffset = e.NewValue;
}
}
catch { }
}
3.datagridview 第1列点击打开文件并选择文件夹位置
private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e)
{
//第1列
if (e.ColumnIndex == 1)
{
string file = DOWNPATH + this.dataGridView1.Rows[e.RowIndex].Cells[e.ColumnIndex].Value.ToString();
System.Diagnostics.Process.Start(file); //打开文件
//string v_OpenFolderPath = DOWNPATH;
System.Diagnostics.Process.Start("explorer.exe", "/select," + file); //打开后选择文件
//this.dataGridView2.Rows[e.RowIndex].Cells[e.ColumnIndex].Value.ToString());
}
}
4.鼠标移动到文字上显示"hand"按钮
private void dataGridView1_CellMouseLeave(object sender, DataGridViewCellEventArgs e)
{
this.Cursor = Cursors.Default;
}
private void dataGridView1_CellMouseMove(object sender, DataGridViewCellMouseEventArgs e)
{
if (e.ColumnIndex == 1)
{
this.Cursor = Cursors.Hand;
}
}
5.安全性问题，System.UnauthorizedAccessException异常
Advanced Installer打包Winform后安装在C盘权限不足的解决方法
解决方法：
（1）VS中右键项目=》属性=》安全性，勾选【启用ClickOne安全设置】；
（2）找到app.manifest，将
