编程语言
首页 > 编程语言> > 如何在C#中创建动态GroupBox

如何在C#中创建动态GroupBox

作者:互联网

我正在尝试动态创建groupbox,这些GB将在复选框上选择时创建.

意味着我现在有5个复选框,如果我选择第一个CB然后1 GB,其他动态复选框将被创建,如果我选择第三个检查,那么另一个GB将创建其他几个复选框.
为此,我尝试使用此代码,因为我能够为已在设计时创建的固定组框创建动态复选框.

我的方案是 – 5个分支有多个批次.现在,用户将从动态复选框中选择分支,并在此基础上,btaches将显示在每个分支的groupbox中.
Branch1 Branch2 Branch3 Branch4 Branch5如果用户选择第3和第5分支,则GB1将显示Branch3的批次,GB2将显示Branch5的批次
这是代码 –

private void RO_SelectedIndexChanged(object sender, EventArgs e)
    {
        groupBox1.Controls.Clear();
        String m = RO.SelectedItem.ToString();
        Console.WriteLine(m);
        aCommand2 = new OleDbCommand("select * from branch_tbl,region_tbl where branch_tbl.region_id=region_tbl.region_id and region_tbl.region_name LIKE '"+m +"'", main_connection);
        aAdapter2 = new OleDbDataAdapter(aCommand2);
        ds2 = new DataSet();
        aAdapter2.Fill(ds2, "app_info");
        ds2.Tables[0].Constraints.Add("pk_bno", ds2.Tables[0].Columns[0], true);
        int bran_count = ds2.Tables[0].Rows.Count;
        Console.WriteLine(bran_count);
        checkBox = new System.Windows.Forms.CheckBox[bran_count];
        for (int i = 0; i < bran_count; ++i)
        {
            checkBox[i] = new CheckBox();
            checkBox[i].Name = "radio" + Convert.ToString(i);
            checkBox[i].Text = ds2.Tables[0].Rows[i][2].ToString();
            checkBox[i].Location = new System.Drawing.Point(125 * i, 15);
            groupBox1.Controls.Add(checkBox[i]);
            checkBox[i].CheckStateChanged += new System.EventHandler(CheckBoxCheckedChanged);
        }
    }
    int count = 1;
    int position = 1;
    //Code for handling event when branch check box is selected or unselected
    private void CheckBoxCheckedChanged(object sender, EventArgs e)
    {
        CheckBox c = (CheckBox)sender;
        //Label myLabel;
        String str = null;
        if (c.Checked == true)
        {
            str = c.Text;               
            aCommand3 = new OleDbCommand("select * from batch_tbl where batch_branch LIKE '" + str + "'", main_connection);
            aAdapter3 = new OleDbDataAdapter(aCommand3);
            ds3 = new DataSet();
            aAdapter3.Fill(ds3, "app_info");
            ds3.Tables[0].Constraints.Add("pk_bno", ds3.Tables[0].Columns[0], true);
            int batch_count = ds3.Tables[0].Rows.Count;
            //filling the groupbox with batch code by generating dynamic checkboxes
            for (int i = 0; i < batch_count; ++i)
            {
                checkBox[i] = new CheckBox();
                checkBox[i].Name = "check" + Convert.ToString(i);
                checkBox[i].Text = ds3.Tables[0].Rows[i][1].ToString();
                Console.WriteLine(checkBox[i].Text);
                checkBox[i].Location = new System.Drawing.Point(104*position, 30);
                groupBox2.Text = c.Text; 
                groupBox2.Controls.Add(checkBox[i]);
                position++;
                count++;
            }
        }
        else
        {
            count--;
            this.Controls.RemoveByKey("lbl" + c.Name);
            this.Update();
        }
    } 

这段代码很好但我不知道有多少分支CB会使用select,所以如何在设计时为每个选定的分支放置GB,因为他需要在运行时选择分支CheckBox来生成GB.

解决方法:

在思考问题后我解决了我的问题.我刚刚完成了为生成动态复选框所做的工作.这是代码

     private void RO_SelectedIndexChanged(object sender, EventArgs e)
    {
        groupBox1.Controls.Clear();
        String m = RO.SelectedItem.ToString();
        Console.WriteLine(m);
        aCommand2 = new OleDbCommand("select * from branch_tbl,region_tbl where branch_tbl.region_id=region_tbl.region_id and region_tbl.region_name LIKE '" + m + "'", main_connection);
        aAdapter2 = new OleDbDataAdapter(aCommand2);
        ds2 = new DataSet();
        aAdapter2.Fill(ds2, "app_info");
        ds2.Tables[0].Constraints.Add("pk_bno", ds2.Tables[0].Columns[0], true);
        int bran_count = ds2.Tables[0].Rows.Count;
        Console.WriteLine(bran_count);
        checkBox = new CheckBox[bran_count];

        for (int i = 0; i < bran_count; ++i)
        {
            checkBox[i] = new CheckBox();
            checkBox[i].Name = "radio" + Convert.ToString(i);
            checkBox[i].Text = ds2.Tables[0].Rows[i][2].ToString();
            checkBox[i].Location = new System.Drawing.Point(125 * i, 15);
            groupBox1.Controls.Add(checkBox[i]);
            checkBox[i].CheckStateChanged += new System.EventHandler(CheckBoxCheckedChanged);
        }
        gpBox=new GroupBox[bran_count];
    }
   String str = null;
   int count = 1;
   int gpcount = 1;
   int position = 1;
   int gpposition = 110;
    //Code for handling event when branch check box is selected or unselected

    private void CheckBoxCheckedChanged(object sender, EventArgs e)
    {
        CheckBox c = (CheckBox)sender;
        //Label myLabel;
        String str = null;
        if (c.Checked == true)
        {
            str = c.Text;
            gpBox[gpcount] = new GroupBox();
            gpBox[gpcount].Name = "gpBox" + Convert.ToString(count);
            gpBox[gpcount].Text = str;
            gpBox[gpcount].Location = new Point(5, gpposition);
            gpBox[gpcount].AutoSize = true;
            this.Controls.Add(gpBox[gpcount]);

            aCommand3 = new OleDbCommand("select * from batch_tbl where batch_branch LIKE '" + str + "'", main_connection);
            aAdapter3 = new OleDbDataAdapter(aCommand3);
            ds3 = new DataSet();
            aAdapter3.Fill(ds3, "app_info");
            ds3.Tables[0].Constraints.Add("pk_bno", ds3.Tables[0].Columns[0], true);
            int batch_count = ds3.Tables[0].Rows.Count;
            //filling the groupbox with batch code by generating dynamic checkboxes
            for (int i = 0; i < batch_count; ++i)
            {
                checkBox[i] = new CheckBox();
                checkBox[i].Name = "check" + Convert.ToString(i);
                checkBox[i].Text = ds3.Tables[0].Rows[i][1].ToString();
                Console.WriteLine(checkBox[i].Text);
                checkBox[i].Location = new System.Drawing.Point(104 * position, 30);
                gpBox[gpcount].Controls.Add(checkBox[i]);
                position++;
                count++;
            }
            position = 1;
            gpposition += 100;
        }
        else
        {
            count--;
            this.Controls.RemoveByKey("lbl" + c.Name);
            this.Update();
        }
    }

标签:c,groupbox
来源: https://codeday.me/bug/20190703/1369891.html