datatable中bool 类型的列 怎么能实现单选

[owl1986]

dt1.Columns.Add(new DataColumn("name", typeof(string)));
dt1.Columns.Add(new DataColumn("读写", typeof(bool)));
dt1.Columns.Add(new DataColumn("只读", typeof(bool)));
dt1.Columns.Add(new DataColumn("隐藏", typeof(bool)));
dt1.Columns.Add(new DataColumn("con", typeof(string)));

我现在想让在datagridview显示出来的dt1只能勾选一列,请问如何实现呢

[龍过鸡年]

// 加入 Form_Load 事件中

bool hide, read, write;
hide = false; read = false; write = false;

// 要改为程序程序中对应列名
string h, r, w, col;
h = "hide"; r = "read"; w = "write"; col = "";

this.dataGridView1.RowEnter += (obj, args) =>
{
    DataGridView dgv = obj as DataGridView;

    // 获取原值
    try
    {
        hide = (bool)(dgv[h, args.RowIndex].Value);
        read = (bool)(dgv[r, args.RowIndex].Value);
        write = (bool)(dgv[w, args.RowIndex].Value);
    }
    catch
    {
        hide = false; read = false; write = false;
    }
};

this.dataGridView1.CancelRowEdit += (obj, args) =>
{
    DataGridView dgv = obj as DataGridView;
    if (dgv.CurrentRow != null)
    {
        int index = dgv.CurrentRow.Index;
        if (!dgv[h, index].Value.Equals(hide)) dgv[h, index].Value = hide;
        if (!dgv[r, index].Value.Equals(hide)) dgv[r, index].Value = read;
        if (!dgv[w, index].Value.Equals(hide)) dgv[w, index].Value = write;
    }
};

this.dataGridView1.CellContentClick += (obj, args) =>
{
    DataGridView dgv = obj as DataGridView;

    switch (dgv.Columns[args.ColumnIndex].Name)
    {
        case "hide": col = "hide"; break;
        case "read": col = "read"; break;
        case "write": col = "write"; break;
        default: break;
    }

    if (col == "") return;

    DataGridViewCheckBoxCell cell =
        dgv[col, args.RowIndex] as DataGridViewCheckBoxCell;

    if (cell.EditingCellValueChanged && cell.EditedFormattedValue.Equals(true))
    {
        if (col != h) dgv[h, args.RowIndex].Value = false;
        if (col != r) dgv[r, args.RowIndex].Value = false;
        if (col != w) dgv[w, args.RowIndex].Value = false;
    }
};

注意 DataGridViewCell.Value 和 DataGridViewCell.EditedFormattedValue 的区别

[龍过鸡年]

改下

default: col = ""; break;

[wuyq11]

private void DataGridView1_CellValueChanged(System.Object sender, System.Windows.Forms.DataGridViewCellEventArgs e)
{
DataGridViewCell cellChange = this.DataGridView1.Rows[e.RowIndex].Cells[e.ColumnIndex];
if (cellChange.GetType() == typeof (DataGridViewCheckBoxCell))
{
bool bChecked = Convert.ToBoolean(cellChange.Value.ToString());
if (bChecked)
{
foreach (DataGridViewCell cell in this.DataGridView1.Rows[e.RowIndex].Cells)
{
if (cell.GetType() == typeof(DataGridViewCheckBoxCell) && cell != cellChange)
cell.Value = false;
}
}
}
else if (cellChange.GetType() == typeof (DataGridViewTextBoxCell))
{

}
}

[Jack2013tong]

checkbox也可以，在每次选择的时候取消之前所选的

[owl1986]

[Quote=引用 1 楼 huwei2003 的回复:]

checkbox也可以，在每次选择的时候取消之前所选的
[/Quote]
我是在数据库中选出来时就已经带出来值了啊

[sxiaohui8709253]

那你要判断了
用那个CellMouseClick事件就可以
private void dataGridView1_CellMouseClick(....)
{
if(dataGridView1.SelectedRows[0].ColIndex=1)//如果鼠标放在“读写”这一列
{
if(dataGridView1.SelectedRows[0].Cells[1].value.ToString().Equals("False"))
{
dataGridView1.SelectedRows[0].Cells[1].Value=true;
}
else
{
if(dataGridView1.SelectedRows[0].cells[2].Value.ToString.Equals("true")||dataGridView1.SelectedRows[0].cells[3].Value.ToString.Equals("true"))
{
dataGridView1.SelectedRows[0].Cells[1].Value=false;
}
}
}

if(dataGridView1.SelectedRows[0].ColIndex=2)//如果鼠标放在“只读”这一列
{
if(dataGridView1.SelectedRows[0].Cells[2].value.ToString().Equals("False"))
{
dataGridView1.SelectedRows[0].Cells[2].Value=true;
}
else
{
if(dataGridView1.SelectedRows[0].cells[1].Value.ToString.Equals("true")||dataGridView1.SelectedRows[0].cells[3].Value.ToString.Equals("true"))
{
dataGridView1.SelectedRows[0].Cells[2].Value=false;
}
}
}

if(dataGridView1.SelectedRows[0].ColIndex=3)//如果鼠标放在“隐藏”这一列
{
if(dataGridView1.SelectedRows[0].Cells[3].value.ToString().Equals("False"))
{
dataGridView1.SelectedRows[0].Cells[3].Value=true;
}
else
{
if(dataGridView1.SelectedRows[0].cells[1].Value.ToString.Equals("true")||dataGridView1.SelectedRows[0].cells[2].Value.ToString.Equals("true"))
{
dataGridView1.SelectedRows[0].Cells[3].Value=false;
}
}
}

}

就是这么个逻辑

[专注研发ERP低代码开发平台]

[Quote=引用 2 楼 owl1986 的回复:]
引用 1 楼 huwei2003 的回复:

checkbox也可以，在每次选择的时候取消之前所选的

我是在数据库中选出来时就已经带出来值了啊
[/Quote]

绑定前重置一下数据源