我如何保持int变量的旧值数,并根据行数改变form1的大小
本文关键字:改变 form1 变量 int 何保持 | 更新日期: 2023-09-27 18:06:31
这是为我工作的代码:
第一个在表单的顶部1:
int firsttime;
private const int ROW_SIZE = 22;
private int NumberOfRows;
Image ima;
private System.Timers.Timer _refreshTimer;
private int _thisProcess;
在构造函数中:
firsttime = 0;
dataGridView1.BackgroundColor = System.Drawing.Color.White;
dataGridView1.Columns["Column2"].DefaultCellStyle.BackColor = System.Drawing.Color.LightGoldenrodYellow;
dataGridView1.Columns["Column3"].DefaultCellStyle.BackColor = System.Drawing.Color.LightGoldenrodYellow;
dataGridView1.AllowUserToAddRows = false;
在form1 load事件中:
private void Form1_Load(object sender, EventArgs e)
{
_thisProcess = Process.GetCurrentProcess().Id;
InitializeRefreshTimer();
PopulateApplications();
}
然后timer init方法使用timer来更新进程列表和dataGridView1。
void InitializeRefreshTimer()
{
_refreshTimer = new System.Timers.Timer(5000);
_refreshTimer.SynchronizingObject = this;
_refreshTimer.Elapsed += new System.Timers.ElapsedEventHandler(TimerToUpdate_Elapsed);
_refreshTimer.Start();
}
计时器经过的事件:
void TimerToUpdate_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
{
PopulateApplications();
}
PopulateApplications方法:
void PopulateApplications()
{
dataGridView1.Rows.Clear();
foreach (Process p in Process.GetProcesses())
{
if (p.MainWindowTitle.Length > 1)
{
var icon = Icon.ExtractAssociatedIcon(p.MainModule.FileName);
ima = icon.ToBitmap();
ima = resizeImage(ima, new Size(25, 25));
ima.Save(@"c:'temp'ima.jpg");
String status = p.Responding ? "Running" : "Not Responding";
dataGridView1.Rows.Add(ima,p.ProcessName, status);
}
}
firsttime += 1;
if (firsttime == 1)
{
NumberOfRows = dataGridView1.Rows.Count;
}
if (NumberOfRows != dataGridView1.Rows.Count)
{
int diff = dataGridView1.Rows.Count - NumberOfRows;
this.Height = this.Height + (ROW_SIZE * diff);
NumberOfRows = dataGridView1.Rows.Count;
}
}
图片大小调整方法:
public static Image resizeImage(Image imgToResize, Size size)
{
return (Image)(new Bitmap(imgToResize, size));
}
在form1设计器中,我添加了9列的dataGridView1只是为了测试。在设计中,form1的尺寸为:652,358dataGridView1的大小为:624,479
现在每次添加新行时,form1 Height自动调整大小+= 22。如果一行被删除,这意味着如果我关闭任何应用程序/进程,它会自动更新dataGridView1和删除一行,form1也会自动调整大小。
用画图程序检查。打开它,关闭它几次,它工作。
EDIT:
我已经用下面的代码替换了我原来的答案,因为它更好。您不需要同时使用lastValue
和currentValue
变量。相反,我使用了一个叫做NumberOfRows
的变量。我还添加了2个常量ROW_SIZE
(每行添加到表单高度的量)和BaseFormHeight
(没有行时表单的高度)。
private const int ROW_SIZE = 22;
private int NumberOfRows;
private int BaseFormHeight
void PopulateApplications()
{
dataGridView1.Rows.Clear();
foreach (Process p in Process.GetProcesses())
{
if (p.MainWindowTitle.Length > 1)
{
... add a row to the data grid ...
}
}
if(NumberOfRows != dataGridView1.Rows.Count)
{
NumberOfRows = dataGridView1.Rows.Count;
this.Height = BaseFormHeight + (ROW_SIZE * NumberOfRows);
}
}
在Load
事件处理程序中,您应该记录表单的初始高度和初始行数。
private void Form1_Load(object sender, EventArgs e)
{
NumberOfRows = dataGridView1.Rows.Count;
BaseFormHeight = this.Height - (NumberOfRows * ROW_SIZE);
PopulateApplications();
}
这是我的工作代码:
第一个在表单的顶部1:
int firsttime;
private const int ROW_SIZE = 22;
private int NumberOfRows;
Image ima;
private System.Timers.Timer _refreshTimer;
private int _thisProcess;
在构造函数中:
firsttime = 0;
dataGridView1.BackgroundColor = System.Drawing.Color.White;
dataGridView1.Columns["Column2"].DefaultCellStyle.BackColor = System.Drawing.Color.LightGoldenrodYellow;
dataGridView1.Columns["Column3"].DefaultCellStyle.BackColor = System.Drawing.Color.LightGoldenrodYellow;
dataGridView1.AllowUserToAddRows = false;
In the form1 load event:
private void Form1_Load(object sender, EventArgs e)
{
_thisProcess = Process.GetCurrentProcess().Id;
InitializeRefreshTimer();
PopulateApplications();
}
然后timer init方法使用timer来更新进程列表和dataGridView1。
void InitializeRefreshTimer()
{
_refreshTimer = new System.Timers.Timer(5000);
_refreshTimer.SynchronizingObject = this;
_refreshTimer.Elapsed += new System.Timers.ElapsedEventHandler(TimerToUpdate_Elapsed);
_refreshTimer.Start();
}
计时器经过的事件:
void TimerToUpdate_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
{
PopulateApplications();
}
PopulateApplications方法:
void PopulateApplications()
{
dataGridView1.Rows.Clear();
foreach (Process p in Process.GetProcesses())
{
if (p.MainWindowTitle.Length > 1)
{
var icon = Icon.ExtractAssociatedIcon(p.MainModule.FileName);
ima = icon.ToBitmap();
ima = resizeImage(ima, new Size(25, 25));
ima.Save(@"c:'temp'ima.jpg");
String status = p.Responding ? "Running" : "Not Responding";
dataGridView1.Rows.Add(ima,p.ProcessName, status);
}
}
firsttime += 1;
if (firsttime == 1)
{
NumberOfRows = dataGridView1.Rows.Count;
}
if (NumberOfRows != dataGridView1.Rows.Count)
{
int diff = dataGridView1.Rows.Count - NumberOfRows;
this.Height = this.Height + (ROW_SIZE * diff);
NumberOfRows = dataGridView1.Rows.Count;
}
}
图片大小调整方法:
public static Image resizeImage(Image imgToResize, Size size)
{
return (Image)(new Bitmap(imgToResize, size));
}
在form1设计器中,我添加了9列的dataGridView1只是为了测试。在设计器中,form1的大小为:652,358 dataGridView1的大小为:624,479
现在每次添加新行时,form1 Height自动调整大小+= 22。如果一行被删除,这意味着如果我关闭任何应用程序/进程,它会自动更新dataGridView1和删除一行,form1也会自动调整大小。
用画图程序检查。打开它,关闭它几次,它工作。