问题描述
我正在通过按标签的控件的根页面中的按钮来以编程方式整体创建一个标签页。目前，所有页面初始化都是通过按钮单击方法进行的。在完成所有实例化，从文件中捕获数据等等之后，我最终希望在数据网格视图中调整列的宽度，以便所有行数据都出现而不必具有水平滚动条。在您所有贡献者的帮助下，除了最后一步，我已经设法使其全部正常运行。全速运行时，似乎DataGridView在表中的数据加载完成之前就已被访问，因为它失败了，但有一个例外，因为从RegistersGrid.ColumnCount（局部变量l）派生的计数为零。如果我逐步执行代码，则一切正常。我以为我需要放入某种形式的互斥体来等待传输完成，但是我无法弄清楚正在发生什么以重置标志！如果有人可以向我指出正确的方向，或者有更好的更有条理的方法来解决这个问题，我将非常感谢您的帮助：-）
我已经在方法中包含了所有代码，以防万一，恐怕要追溯很久了，所以如果这看起来像汇编程序，pascal和c的笨拙的孩子，并抛出了一点C＃，我深表歉意。 ..这是我的年龄：-）
private void AddModuleButton_Click(object sender,EventArgs e)
{
string ModuleID = null;
string ModuleTypeFileNumber = null;
string ModuleType = null;
int TabID = 0;
openFileDialog1.Filter = "Text Files (.txt)|*.txt";
DialogResult result = openFileDialog1.ShowDialog();
if (result == DialogResult.OK)
using (StreamReader reader = new StreamReader(openFileDialog1.FileName))
{
string newline;
if ((newline = reader.ReadLine()) != null)
{
string[] values = newline.Split((char)9);
ModuleTypeFileNumber = values[1];
}
if ((newline = reader.ReadLine()) != null)
{
string[] values = newline.Split();
ModuleID = values[0];
ModuleType = values[1];
}
bool AbsorbLines = true;
while (AbsorbLines && ((newline = reader.ReadLine()) != null))
{
string[] values = newline.Split();
if (values[0] == "Readings") AbsorbLines = false;
}
string[] columnnames = { "Summary","access","register","Module & Name","Value","unit","type","Res" };
string[] columntypes = { "System.Boolean","System.String","system.int32","System.String" };
int[] columnwidth = { 1,2,3,35,10,5,5 };
DataTable dt = new DataTable();
for(int i =0; i < columnnames.Length; i++)
{
DataColumn colString = new DataColumn(columnnames[i]);
colString.DataType = System.Type.GetType(columntypes[i]);
dt.Columns.Add(colString);
}
while (ImportTable("Controls",reader.ReadLine(),dt,"RO")) { } // Import the "readings" section
while (ImportTable("Status bits","RW")) { } // Import the "controls" section
reader.Close();
registerTables.Add(ModuleID,dt);
// create a new tab page
TabPage page = new TabPage(ModuleID);
InterbusRegisters.TabPages.Add(page);
//
// tabPage1
//
Button ResizeButton = new Button();
Button RemoveButton = new Button();
Label VersionLabel = new Label();
Label SerialNolabel = new Label();
TextBox VersionNoTB = new TextBox();
TextBox SerialNoTB = new TextBox();
DataGridView RegistersGrid = new DataGridView();
//
// Set the properties of the DataGrid.
//
RegistersGrid.AccessibleName = ModuleID + "Grid";
RegistersGrid.Location = new System.Drawing.Point(3,29);
RegistersGrid.Width = page.Width - 6;
RegistersGrid.Height = page.Height - 29;
RegistersGrid.Anchor = (AnchorStyles.Top | AnchorStyles.Left);
RegistersGrid.DataSource = dt;
RegistersGrid.Dock = (DockStyle)2;
//
// RemoveButtonRegistersGrid
//
RemoveButton.BackColor = System.Drawing.Color.Red;
RemoveButton.Location = new System.Drawing.Point(3,4);
RemoveButton.Name = "RemoveButton";
RemoveButton.Size = new System.Drawing.Size(75,25);
RemoveButton.TabIndex = 0;
RemoveButton.Text = "Remove";
RemoveButton.UseVisualStyleBackColor = false;
RemoveButton.Click += new System.EventHandler(this.RemoveButton_Click);
//
// ResizeButton
//
ResizeButton.BackColor = System.Drawing.Color.DarkOrange;
ResizeButton.Location = new System.Drawing.Point(81,4);
ResizeButton.Name = "ResizeButton";
ResizeButton.Size = new System.Drawing.Size(75,25);
ResizeButton.TabIndex = 6;
ResizeButton.Text = "Resize";
ResizeButton.UseVisualStyleBackColor = false;
ResizeButton.Click += new System.EventHandler(this.ResizeButton_Click);
//
// SerialNolabel
//
SerialNolabel.AutoSize = true;
SerialNolabel.Location = new System.Drawing.Point(159,10);
SerialNolabel.Name = "SerialNolabel";
SerialNolabel.Size = new System.Drawing.Size(53,13);
SerialNolabel.TabIndex = 4;
SerialNolabel.Text = "Serial No:";
//
// SerialNoTB
//
SerialNoTB.Location = new System.Drawing.Point(215,7);
SerialNoTB.Name = "SerialNoTB";
SerialNoTB.Size = new System.Drawing.Size(100,20);
SerialNoTB.TabIndex = 1;
//
// VersionLabel
//
VersionLabel.AutoSize = true;
VersionLabel.Location = new System.Drawing.Point(318,10);
VersionLabel.Name = "VersionLabel";
VersionLabel.Size = new System.Drawing.Size(45,13);
VersionLabel.TabIndex = 5;
VersionLabel.Text = "Version:";
//
// VersionTB
//
VersionNoTB.Location = new System.Drawing.Point(366,7);
VersionNoTB.Name = "VersionTB";
VersionNoTB.Size = new System.Drawing.Size(100,20);
VersionNoTB.TabIndex = 2;
page.Controls.Add(ResizeButton);
page.Controls.Add(RemoveButton);
page.Controls.Add(VersionLabel);
page.Controls.Add(VersionNoTB);
page.Controls.Add(SerialNolabel);
page.Controls.Add(SerialNoTB);
page.Controls.Add(RegistersGrid);
page.Location = new System.Drawing.Point(4,22);
page.Size = new System.Drawing.Size(716,554);
page.TabIndex = 1;
page.UseVisualStyleBackColor = true;
page.Update(); // the following code fails
int k = dt.Columns.Count;
int l = RegistersGrid.ColumnCount;
for (int j = 0; j <= RegistersGrid.ColumnCount - 1; j++)
RegistersGrid.Columns[j].AutoSizeMode = DataGridViewAutoSizeColumnMode.AllCells;
RegistersGrid.Columns[3].AutoSizeMode = DataGridViewAutoSizeColumnMode.Fill;
//datagrid has calculated it's widths so we can store them
for (int i = 0; i <= RegistersGrid.ColumnCount - 1; i++)
{
int colw = RegistersGrid.Columns[i].Width; //store autosized widths
RegistersGrid.Columns[i].AutoSizeMode = DataGridViewAutoSizeColumnMode.None; //remove autosizing
RegistersGrid.Columns[i].Width = colw; //set width to calculated by autosize
}
}
}
解决方法
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