Question

我有像这样的数据网格视图

enter image description here

当我尝试单击要尝试订购数据的列标题时，程序会在行中断行

DataGridViewRow row = dataGridView1.Rows[rowIndex];

未处理ArgumentOutOfRangeException。指数超出范围。必须是非负数且小于集合的大小。参数名称：index

这是.designer.cs中的代码

this.dataGridView1.AutoSizeColumnsMode = System.Windows.Forms.DataGridViewAutoSizeColumnsMode.AllCells;
this.dataGridView1.AutoSizeRowsMode = System.Windows.Forms.DataGridViewAutoSizeRowsMode.AllCells;
this.dataGridView1.BackgroundColor = System.Drawing.Color.Azure;
this.dataGridView1.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
this.dataGridView1.Location = new System.Drawing.Point(21, 62);
this.dataGridView1.Name = "dataGridView1";
this.dataGridView1.Size = new System.Drawing.Size(586, 381);
this.dataGridView1.TabIndex = 9;
this.dataGridView1.CellContentClick += new System.Windows.Forms.DataGridViewCellEventHandler(this.dataGridView1_CellContentClick_1);

这是我的.cs

中的代码

private void dataGridView1_CellContentClick_1(object sender, DataGridViewCellEventArgs e)
        {
            int rowIndex = e.RowIndex;
            DataGridViewRow row = dataGridView1.Rows[rowIndex];
            groupBoxPenghuni.Visible = false;
            groupBoxStaff.Visible = false;
            groupBoxRoom.Visible = false;
            groupBoxDPenghuni.Visible = true;
            groupBoxPenghasilan.Visible = false;
            GroupBox_AddResident_Resident.Visible = false;
            GroupBox_AddResident_Room.Visible = false;
            GroupBox_AddResident1.Visible = false;
            GroupBox_DeleteResident_Resident.Visible = false;
            GroupBox_DeleteResident1.Visible = false;
            GroupBox_Resident.Visible = false;
            GroupBox_Update_Room.Visible = false;
            GroupBox_UpdateResident1.Visible = false;
        }

什么是错？我该怎么办？

Answer 1

失败的原因是因为您的dataGridView1_CellContentClick_1在您排序和Index was out of range时会触发。你应该在继续之前检查它是否有效。

这些是声明的，但从未使用过。你真的需要这些线吗？

int rowIndex = e.RowIndex;
DataGridViewRow row = dataGridView1.Rows[rowIndex];

如果确实需要这些行，则必须先检查索引是否超出范围，然后再尝试声明它们。

private void dataGridView1_CellContentClick_1(object sender, DataGridViewCellEventArgs e)
{
    if (e.RowIndex >= 0)
    {
        int rowIndex = e.RowIndex;
        DataGridViewRow row = dataGridView1.Rows[rowIndex];
        groupBoxPenghuni.Visible = false;
        groupBoxStaff.Visible = false;
        groupBoxRoom.Visible = false;
        groupBoxDPenghuni.Visible = true;
        groupBoxPenghasilan.Visible = false;
        GroupBox_AddResident_Resident.Visible = false;
        GroupBox_AddResident_Room.Visible = false;
        GroupBox_AddResident1.Visible = false;
        GroupBox_DeleteResident_Resident.Visible = false;
        GroupBox_DeleteResident1.Visible = false;
        GroupBox_Resident.Visible = false;
        GroupBox_Update_Room.Visible = false;
        GroupBox_UpdateResident1.Visible = false;
    }
}

Answer 2

你必须检查CellContentClick事件：

if (e.RowIndex != -1 && e.ColumnIndex!=-1)
{
// do something
}

如果e.RowIndex为-1，则表示您单击了列标题行标题

也是如此

在C列中的订单数据中断

2 个答案: