我正在运行时创建TextBoxes,需要它们具有固定的宽度。但是,正如我期望的那样,用户可能会输入一些大字,因此它应该是多行的,因此会增加其高度。
我已经能够设置除AutoSize以外的所有类型的属性,我相信我必须这样做,因为我的TextBox行为不如我希望的那样。当我键入较大的输入内容时,它们会将所有内容仅保留在一行中,并且由于其长度固定,因此不会显示整个文本。
C#不允许我执行textbox1.Autosize = True;
这是我到目前为止的内容:
TextBox textBox1 = new TextBox()
{
Name = i.ToString() + j.ToString() + "a",
Text = "",
Location = new System.Drawing.Point(xCoord + 2, yCoord + 10),
TextAlign = HorizontalAlignment.Left,
Font = new Font("ArialNarrow", 10),
Width = 30,
Enabled = true,
BorderStyle = BorderStyle.None,
Multiline = true,
WordWrap = true,
TabIndex = tabIndex + 1
};
如何将Autosize属性设置为动态创建的TextBox?
或者还有另一种方法可以完成我想做的事情?
您可以尝试使用以下代码来创建预期的文本框。
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private const int EM_GETLINECOUNT = 0xba;
[DllImport("user32", EntryPoint = "SendMessageA", CharSet = CharSet.Ansi, SetLastError = true, ExactSpelling = true)]
private static extern int SendMessage(int hwnd, int wMsg, int wParam, int lParam);
TextBox textBox1 = new TextBox()
{
Name = "a",
Text = "",
Location = new System.Drawing.Point(2, 10),
TextAlign = HorizontalAlignment.Left,
Font = new Font("ArialNarrow", 10),
Width = 100,
Enabled = true,
BorderStyle = BorderStyle.None,
Multiline = true,
WordWrap = true,
};
private void Form1_Load(object sender, EventArgs e)
{
textBox1.TextChanged += TextBox1_TextChanged;
this.Controls.Add(textBox1);
}
private void TextBox1_TextChanged(object sender, EventArgs e)
{
var numberOfLines = SendMessage(textBox1.Handle.ToInt32(), EM_GETLINECOUNT, 0, 0);
textBox1.Height = (textBox1.Font.Height + 2) * numberOfLines;
}
}
结果: