如何清理GDI对象和用户对象
本文关键字：对象 用户 GDI 何清理 | 更新日期: 2023-09-27 18:10:59
我有一个动态生成的windows form apptabpages、controls、datagridviews和所有的events都是动态的当control生成GDI objects而User objects不生成时使用so每次清理当前的objects加上之前的objects，那一次我的应用程序将崩溃。我可以dispose全部controls、clear全部controls、force至garbage收集器、空OBJECT ARRAY内存等我能做的一切但在我看来，工作时不清洁GDI Objects和UserObjects完成我正在与u guyx plx共享代码一些帮助我
这是我的公共数组对象
public TabPage[] tab = new TabPage[20];
public DataGridView[] rtb = new DataGridView[20];
public TextBox[] txt = new TextBox[20];
public TextBox[] txt1 = new TextBox[20];
public TextBox[] aoid = new TextBox[20];
public TextBox[] soid = new TextBox[20];
public Button[] getar = new Button[20];
public Button[] getsi = new Button[20];
private TextBox[] txt2 = new TextBox[20];
private TextBox[] txt3 = new TextBox[20];
private Label[] lbl = new Label[20];
private Label[] lbl1 = new Label[20];
private Label[] lbl2 = new Label[20];
private Label[] lbl3 = new Label[20];
private Label[] pwl = new Label[20];
private TextBox[] pwt = new TextBox[20];
private TextBox[] txt4 = new TextBox[20];
private Label[] pc_carton = new Label[20];
private TextBox[] pcs_carton = new TextBox[20];
private Label[] un = new Label[20];
private TextBox[] units = new TextBox[20];
private Label[] refno_l = new Label[20];
private TextBox[] refno_t = new TextBox[20];
private Label[] pro_l = new Label[20];
private TextBox[] pro_t = new TextBox[20];
private Label[] inlay_l = new Label[20];
public TextBox[] inlay_t = new TextBox[20];
public TextBox[] inlay_i = new TextBox[20];
private Button[] getin = new Button[20];
private Label[] yarn_l = new Label[20];
public TextBox[] yarn_t = new TextBox[20];
public TextBox[] yarn_i = new TextBox[20];
private Button[] getyrn = new Button[20];
private Label[] order_l = new Label[20];
public TextBox[] order_t = new TextBox[20];
//private Label[] inlayl = new Label[8];
//private TextBox[] inlayt = new TextBox[8];
public TextBox[] txt5 = new TextBox[6];
public TextBox[] txt6 = new TextBox[6];
private Label[] kd_l = new Label[20];
public TextBox[] kd_t = new TextBox[20];
private Label[] date_l = new Label[20];
private DateTimePicker[] date_p = new DateTimePicker[20];
private CheckBox[] checkb = new CheckBox[20];
private TextBox[] checkt = new TextBox[20];
private Label[] spec_l = new Label[20];
public RichTextBox[] spec_t = new RichTextBox[20];
private Label[] ean_l = new Label[20];
public RichTextBox[] ean_t = new RichTextBox[20];
这是基于文本框值的控件生成
try
{
if (e.KeyCode == Keys.Enter)
{
k = 0;
//s = 0;
tabControl2.TabPages.Clear();
k = Convert.ToInt32(textBox9.Text);
k1 = k - tabControl2.TabPages.Count;
//cc = Convert.ToInt32(textBox9.Text);
if (k > 20)
{
MessageBox.Show("You Exceed Limit");
}
else
{
for (int i = 0; i < k; i++)
{
tab[i] = new TabPage();
//tab[i] = new TabPage();
rtb[i] = new DataGridView();
//Start Gridview
rtb[i] = new System.Windows.Forms.DataGridView();
rtb[i].Location = new System.Drawing.Point(0, 110);
rtb[i].Anchor = AnchorStyles.Right | AnchorStyles.Left | AnchorStyles.Top;
rtb[i].Size = new System.Drawing.Size(1020, 230);
rtb[i].AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.DisplayedCells;
foreach (DataGridViewColumn dcol in rtb[i].Columns)
{
dcol.AutoSizeMode = DataGridViewAutoSizeColumnMode.AllCells;
}
//ID Column
rtb[i].Columns.Add("tr_id", "ID");
rtb[i].Columns["tr_id"].ReadOnly = true;
rtb[i].Columns["tr_id"].Width = 1;
rtb[i].Columns["tr_id"].Visible = false;
//rtb[i].Columns["tr_id"].ReadOnly = true;
rtb[i].Columns.Add("Counter", "SNo");
rtb[i].Columns["Counter"].ReadOnly = true;
//rtb[i].Columns["tr_id"].ReadOnly = true;
//rtb[i].Columns["tr_id"].Width = 10;
rtb[i].Columns.Add("color_id", "id");
rtb[i].Columns["color_id"].Visible = false;
// Color Column
rtb[i].Columns.Add("color_name", "Color Name");
rtb[i].Columns["color_name"].ReadOnly = true;
rtb[i].Columns.Add("color_no", "Pantone No.");
rtb[i].Columns["color_no"].ReadOnly = true;
//Quantity Column
rtb[i].Columns.Add("quantity", "Quantity");
//Piece Weight Column
//rtb[i].Columns.Add("piece_weight", "Piece Weight");
//Total Weight Carton
rtb[i].Columns.Add("total_weight", "Total Weight");
rtb[i].Columns["total_weight"].ReadOnly = true;
//Piece in Carton Column
//rtb[i].Columns.Add("pcs_carton", "Pcs/Carton");
//No Of Carton Column
rtb[i].Columns.Add("no_of_carton", "Total Cartons");
//rtb[i].Columns["no_of_carton"].ReadOnly = true;
//Unit Name Column
//rtb[i].Columns.Add("unit_name", "Unit Name");
//Rate Column
rtb[i].Columns.Add("rate", "Rate");
//Amount Column
rtb[i].Columns.Add("amount", "Amount");
rtb[i].Columns["amount"].ReadOnly = true;
//Ship Qty Column
rtb[i].Columns.Add("ship_qty", "Ship Qty.");
//kdnr column
// rtb[i].Columns.Add("kdnr", "KDNR");
//reference No Column
rtb[i].Columns.Add("ref_no", "Reference No./Ean No");
//Article No/Product No
//rtb[i].Columns.Add("artno", "Art. No./Prd. No.");
DataGridViewCheckBoxColumn checkColumn = new DataGridViewCheckBoxColumn();
checkColumn.Name = "deleterow";
checkColumn.HeaderText = "Delete Row";
checkColumn.Width = 50;
checkColumn.ReadOnly = false;
checkColumn.FillWeight = 10; //if the datagridview is resized (on form resize) the checkbox won't take up too much; value is relative to the other columns' fill values
checkColumn.Visible = false;
rtb[i].Columns.Add(checkColumn);
//DataGridViewButtonColumn btcol2 = new DataGridViewButtonColumn();
//btcol2.HeaderText = "Delete";
//btcol2.Name = "delete";
//btcol2.Text = "Delete";
//btcol2.Width = 50;
//btcol2.UseColumnTextForButtonValue = true;
//rtb[i].Columns.Add(btcol2);
//End Gridview
rtb[i].AllowUserToAddRows = false;
//Start txt0
txt[i] = new TextBox();
txt[i].Location = new System.Drawing.Point(70, 0);
txt[i].Size = new System.Drawing.Size(169, 20);
txt[i].Enabled = false;
//End txt0
getar[i] = new Button();
getar[i].Location = new System.Drawing.Point(241, 0);
getar[i].Size = new System.Drawing.Size(35, 20);
getar[i].Text = "Get";
aoid[i] = new TextBox();
aoid[i].Location = new System.Drawing.Point(70, 0);
aoid[i].Size = new System.Drawing.Size(10, 20);
aoid[i].Visible = false;
//Start Label0
lbl[i] = new Label();
lbl[i].Location = new System.Drawing.Point(0, 0);
lbl[i].Text = "Article Name:";
lbl[i].Size = new System.Drawing.Size(70, 20);
//End Label0
//Start Label1
lbl1[i] = new Label();
lbl1[i].Location = new System.Drawing.Point(280, 0);
lbl1[i].Text = "Size:";
lbl1[i].Size = new System.Drawing.Size(30, 20);
//End
soid[i] = new TextBox();
soid[i].Location = new System.Drawing.Point(320, 0);
soid[i].Size = new System.Drawing.Size(10, 20);
soid[i].Visible = false;
//start txt1
txt1[i] = new TextBox();
txt1[i].Location = new System.Drawing.Point(320, 0);
txt1[i].Size = new System.Drawing.Size(169, 20);
txt1[i].ReadOnly = true;
//txt1[i].Text = "asdf";
//end txt1
getsi[i] = new Button();
getsi[i].Location = new System.Drawing.Point(489, 0);
getsi[i].Size = new System.Drawing.Size(35, 20);
getsi[i].Text = "Get";
////Start Label2
//lbl2[i] = new Label();
//lbl2[i].Location = new System.Drawing.Point(320, 0);
//lbl2[i].Text = "Special Instruction:";
//lbl2[i].Size = new System.Drawing.Size(100, 20);
////End Label2
////start txt2
//txt2[i] = new TextBox();
//txt2[i].Location = new System.Drawing.Point(420, 0);
//txt2[i].Size = new System.Drawing.Size(250, 50);
//txt2[i].Multiline = true;
////end txt2
////start lbl3
lbl3[i] = new Label();
lbl3[i].Location = new System.Drawing.Point(530, 0);
lbl3[i].Text = "Packs :";
lbl3[i].Size = new System.Drawing.Size(50, 20);
////end lbl3
////start txt3
txt3[i] = new TextBox();
txt3[i].Location = new System.Drawing.Point(580, 0);
txt3[i].Text = "1";
////end txt3
////start lbl3
pwl[i] = new Label();
pwl[i].Location = new System.Drawing.Point(690, 0);
pwl[i].Text = "Piece Weight";
pwl[i].Size = new System.Drawing.Size(75, 20);
////end lbl3
////start txt3
pwt[i] = new TextBox();
pwt[i].Location = new System.Drawing.Point(770, 0);
pwt[i].Size = new System.Drawing.Size(50, 20);
//pwt[i].Text = "1";
////end txt3
////start lbl3
pc_carton[i] = new Label();
pc_carton[i].Location = new System.Drawing.Point(820, 0);
pc_carton[i].Text = "Pcs Carton";
pc_carton[i].Size = new System.Drawing.Size(60, 20);
////end lbl3
////start txt3
pcs_carton[i] = new TextBox();
pcs_carton[i].Location = new System.Drawing.Point(890, 0);
pcs_carton[i].Size = new System.Drawing.Size(50, 20);
//pwt[i].Text = "1";
////end txt3
////start lbl3
un[i] = new Label();
un[i].Location = new System.Drawing.Point(940, 0);
un[i].Text = "Unit Name";
un[i].Size = new System.Drawing.Size(60, 20);
////end lbl3
////start lbl3
pro_l[i] = new Label();
pro_l[i].Location = new System.Drawing.Point(0, 30);
pro_l[i].Text = "Program No.:";
pro_l[i].Size = new System.Drawing.Size(70, 20);
////end lbl3
////start txt3
pro_t[i] = new TextBox();
pro_t[i].Location = new System.Drawing.Point(70, 30);
pro_t[i].Size = new System.Drawing.Size(30, 20);
pro_t[i].MaxLength = 1;
//pro_t[i].Text = "1";
////end txt3
//Start txt0
inlay_t[i] = new TextBox();
inlay_t[i].Location = new System.Drawing.Point(137, 30);
inlay_t[i].Size = new System.Drawing.Size(169, 20);
inlay_t[i].Enabled = false;
//End txt0
getin[i] = new Button();
getin[i].Location = new System.Drawing.Point(306, 30);
getin[i].Size = new System.Drawing.Size(35, 20);
getin[i].Text = "Get";
inlay_i[i] = new TextBox();
inlay_i[i].Location = new System.Drawing.Point(137, 30);
inlay_i[i].Size = new System.Drawing.Size(10, 20);
inlay_i[i].Visible = false;
//Start Label0
inlay_l[i] = new Label();
inlay_l[i].Location = new System.Drawing.Point(105, 30);
inlay_l[i].Text = "Inlay:";
inlay_l[i].Size = new System.Drawing.Size(32, 20);
//End Label0
//Start Label1
yarn_l[i] = new Label();
yarn_l[i].Location = new System.Drawing.Point(346, 30);
yarn_l[i].Text = "Yarn:";
yarn_l[i].Size = new System.Drawing.Size(32, 20);
//End
yarn_i[i] = new TextBox();
yarn_i[i].Location = new System.Drawing.Point(378, 30);
yarn_i[i].Size = new System.Drawing.Size(10, 20);
yarn_i[i].Visible = false;
//start txt1
yarn_t[i] = new TextBox();
yarn_t[i].Location = new System.Drawing.Point(378, 30);
yarn_t[i].Size = new System.Drawing.Size(169, 20);
yarn_t[i].ReadOnly = true;
//txt1[i].Text = "asdf";
//end txt1
getyrn[i] = new Button();
getyrn[i].Location = new System.Drawing.Point(547, 30);
getyrn[i].Size = new System.Drawing.Size(35, 20);
getyrn[i].Text = "Get";
order_l[i] = new Label();
order_l[i].Location = new System.Drawing.Point(580, 30);
order_l[i].Text = "Order No.";
order_l[i].Size = new System.Drawing.Size(70, 20);
order_t[i] = new TextBox();
order_t[i].Location = new System.Drawing.Point(650, 30);
order_t[i].Size = new System.Drawing.Size(129, 20);
// order_t[i].ReadOnly = true;
//////start txt3
//refno_t[i] = new TextBox();
kd_l[i] = new Label();
kd_l[i].Location = new System.Drawing.Point(785, 30);
kd_l[i].Text = "KDNR";
kd_l[i].Size = new System.Drawing.Size(40, 20);
kd_t[i] = new TextBox();
kd_t[i].Location = new System.Drawing.Point(825, 30);
kd_t[i].Size = new System.Drawing.Size(129, 20);
//refno_t[i].Location = new System.Drawing.Point(990, 0);
//refno_t[i].Size = new System.Drawing.Size(300, 40);
date_l[i] = new Label();
date_l[i].Location = new System.Drawing.Point(955, 30);
date_l[i].Text = "Ship. Date";
date_l[i].Size = new System.Drawing.Size(60, 20);
//refno_t[i].Multiline = true;
////pwt[i].Text = "1";
date_p[i] = new DateTimePicker();
// date_p[i].Name = "DyanmicDateTimePicker";
date_p[i].Location = new System.Drawing.Point(1020, 30);
date_p[i].Size = new System.Drawing.Size(90, 25);
date_p[i].Format = DateTimePickerFormat.Short;
date_p[i].Text = dateTimePicker_shipmentdate.Text;
////end txt3
checkb[i] = new CheckBox();
checkb[i].Location = new Point(1115, 30);
checkb[i].Text = "";
checkb[i].Size = new System.Drawing.Size(20, 20);
////start txt4
checkt[i] = new TextBox();
checkt[i].Location = new System.Drawing.Point(1140, 30);
checkt[i].Size = new System.Drawing.Size(30, 25);
checkt[i].ReadOnly = true;
checkt[i].Text = "1";
//txt3[i].Text = "1";
////end txt4
spec_l[i] = new Label();
spec_l[i].Location = new System.Drawing.Point(0, 60);
spec_l[i].Text = "Special Instruction:";
spec_l[i].Size = new System.Drawing.Size(100, 20);
spec_t[i] = new RichTextBox();
spec_t[i].Location = new Point(101, 60);
spec_t[i].Size = new System.Drawing.Size(200, 50);
ean_l[i] = new Label();
ean_l[i].Location = new System.Drawing.Point(365, 60);
ean_l[i].Text = "Ean Codes:";
ean_l[i].Size = new System.Drawing.Size(80, 20);
ean_t[i] = new RichTextBox();
ean_t[i].Location = new Point(445, 60);
ean_t[i].Size = new System.Drawing.Size(200, 50);
////start txt4
txt4[i] = new TextBox();
txt4[i].Location = new System.Drawing.Point(1050, 30);
txt4[i].Size = new System.Drawing.Size(1, 1);
//txt3[i].Text = "1";
////end txt4
tab[i].Controls.Add(lbl[i]);
tab[i].Controls.Add(txt[i]);
tab[i].Controls.Add(lbl1[i]);
tab[i].Controls.Add(txt1[i]);
tab[i].Controls.Add(lbl2[i]);
tab[i].Controls.Add(txt2[i]);
tab[i].Controls.Add(lbl3[i]);
tab[i].Controls.Add(txt3[i]);
tab[i].Controls.Add(pwl[i]);
tab[i].Controls.Add(pwt[i]);
tab[i].Controls.Add(pc_carton[i]);
tab[i].Controls.Add(pcs_carton[i]);
tab[i].Controls.Add(un[i]);
tab[i].Controls.Add(units[i]);
tab[i].Controls.Add(txt4[i]);
tab[i].Controls.Add(getar[i]);
tab[i].Controls.Add(getsi[i]);
tab[i].Controls.Add(aoid[i]);
tab[i].Controls.Add(soid[i]);
tab[i].Controls.Add(pro_l[i]);
tab[i].Controls.Add(pro_t[i]);
tab[i].Controls.Add(inlay_l[i]);
tab[i].Controls.Add(inlay_t[i]);
tab[i].Controls.Add(inlay_i[i]);
tab[i].Controls.Add(getin[i]);
tab[i].Controls.Add(yarn_l[i]);
tab[i].Controls.Add(yarn_t[i]);
tab[i].Controls.Add(yarn_i[i]);
tab[i].Controls.Add(getyrn[i]);
tab[i].Controls.Add(order_l[i]);
tab[i].Controls.Add(order_t[i]);
tab[i].Controls.Add(kd_l[i]);
tab[i].Controls.Add(kd_t[i]);
tab[i].Controls.Add(date_l[i]);
tab[i].Controls.Add(date_p[i]);
tab[i].Controls.Add(checkb[i]);
tab[i].Controls.Add(checkt[i]);
tab[i].Controls.Add(spec_l[i]);
tab[i].Controls.Add(spec_t[i]);
tab[i].Controls.Add(ean_l[i]);
tab[i].Controls.Add(ean_t[i]);
//tab[i].Controls.Add(refno_l[i]);
//tab[i].Controls.Add(refno_t[i]);
//tab[i].Controls.Add(lbl5[i]);
//tab[i].Text = txt1[i].Text;
tab[i].Controls.Add(rtb[i]);
tab[i].Location = new System.Drawing.Point(4, 22);
tab[i].Name = "tab" + i.ToString();
tab[i].Padding = new System.Windows.Forms.Padding(3);
tab[i].Size = new System.Drawing.Size(400, 242);
tab[i].Text = "Article" + i.ToString();
tab[i].UseVisualStyleBackColor = true;
tabControl2.TabPages.Add(tab[i]);
#region Auto Complete For Unit Name
try
{
//TextBox te = e.Control as TextBox;
units[i].AutoCompleteMode = AutoCompleteMode.SuggestAppend;
units[i].AutoCompleteCustomSource.AddRange(new string[] { "Piece", "Packs", "Mtr", "Kg." });
units[i].AutoCompleteSource = AutoCompleteSource.CustomSource;
//txt[i].AutoCompleteMode = AutoCompleteMode.SuggestAppend;
//txt[i].AutoCompleteSource = AutoCompleteSource.CustomSource;
//txt[i].AutoCompleteCustomSource = namesCollection1;
}
catch (Exception aa) { MessageBox.Show(aa.Message); }
#endregion
rtb[i].RowContextMenuStripNeeded += new System.Windows.Forms.DataGridViewRowContextMenuStripNeededEventHandler(this.dataGridView_RowContextMenuStripNeeded);
this.deleteRowToolStripMenuItem.Click += new System.EventHandler(this.deleteRowToolStripMenuItem_Click1);
//MessageBox.Show(""+tab[i].Text);
rtb[i].KeyDown += new KeyEventHandler(rtb_KeyDown);
rtb[i].RowEnter += new System.Windows.Forms.DataGridViewCellEventHandler(dataGridView_RowEnter);
rtb[i].KeyDown += new KeyEventHandler(rtb_KeyDown);
rtb[i].EditingControlShowing += new DataGridViewEditingControlShowingEventHandler(dataGridView1_EditingControlShowing);
txt1[i].Leave += new System.EventHandler(txt1_Leave);
rtb[i].CellEndEdit += new System.Windows.Forms.DataGridViewCellEventHandler(dataGridView_CellEndEdit);
getar[i].Click += new EventHandler(getarticle_Click);
getsi[i].Click += new EventHandler(getsize_Click);
this.pro_t[i].KeyPress += new System.Windows.Forms.KeyPressEventHandler(this.textch_KeyPress);
getyrn[i].Click += new EventHandler(getyarn_Click);
getin[i].Click += new EventHandler(getinlay_Click);
checkb[i].CheckedChanged += new System.EventHandler(CheckBoxChanged);
//this.rtb[i].DefaultValuesNeeded += new System.Windows.Forms.DataGridViewRowEventHandler(this.dataGridView_DefaultValuesNeeded);
}
}
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
当您将事件与任何控件绑定时，它不会被释放，除非父控件在删除do-=之前也这样做。若可以创建块，也可以使用关键字using来创建每个创建对象的范围。