this.dataGridView1.ReadOnly = false;
                for (int i = 1; i <= this.dataGridView1.DisplayedColumnCount(false); i++)
                {
                    if (i == 1)
                    {
                        this.dataGridView1.Columns[i].ReadOnly = false;
                    }
                    else
                    {
                        this.dataGridView1.Columns[i].ReadOnly = true;
                    }
                }

this.dataGridView1.Columns[0].ReadOnly = false;
this.dataGridView1.Columns[1].ReadOnly = true;
this.dataGridView1.Columns[2].ReadOnly = true;
this.dataGridView1.Columns[3].ReadOnly = true;

------解决方案--------------------
C# code

this.dataGridView1.ReadOnly = false;
for (int i = [color=#FF0000]0[/color]; i [color=#FF0000]<[/color] this.dataGridView1.DisplayedColumnCount(false); i++)
            {
                if (i == 1)
                {
                    this.dataGridView1.Columns[i].ReadOnly = false;
                }
                else
                {
                    this.dataGridView1.Columns[i].ReadOnly = true;
                }
            }

------解决方案--------------------
private void dataGridView1(object sender, EventArgs e)
{

...
}
第一列是0

------解决方案--------------------
C# code

for (int i = 0; i < this.dataGridView1.Columns.Count; i++)
{
    if(i==0)
        this.dataGridView1.Columns[i].ReadOnly = false;
    else
        this.dataGridView1.Columns[i].ReadOnly = true;
}

------解决方案--------------------
探讨

引用:
C# code

for (int i = 0; i < this.dataGridView1.Columns.Count; i++)
{
 if(i==0)
 this.dataGridView1.Columns[i].ReadOnly = false;
 else
 this.dataGridView1.Columns[i].ReadOnl……
……