set the AutoSize property to true. The label will adjust its length so all the text is visible, if the label is wider than the form, the entire label will not be visible
Try this, simply modify in your code with this..
private void InitializeLabel()
{
this.Label1 = new Label();
this.Label1.Location = new System.Drawing.Point(10, 10);
this.Label1.Name = "Label1";
this.Label1.TabIndex = 0;
this.Label1.Size = new System.Drawing.Size(10, 10);
this.Controls.Add(this.Label1);
this.Label1.AutoSize = true;
this.Label1.Text = "text" +
"text";
}