如何基于组合框的值更改DataGridView单元格颜色？ [英] How to change DataGridView cell color based on value of Combobox?

问题描述

我有一个如下的datagridview：

I have a datagridview as below:

我想要：

• 加载表单时，如果性别列的值为Male，列 Name 的相应颜色单元格为White

• When the form load, if the Gender column's value is Male, the corresponding color cell of column Name will be White

如果更改列性别的值：男性→女性，列名称的颜色单元将为DarkGray，
，否则如果更改列性别的值：女性→男性，列名称的颜色单元格将为白色

When if changes the value of the column Gender: Male → Female, color cell of the column Name will be DarkGray, otherwise if changes the value of the column Gender: Female → Male, color cell of the column Name will be White

我尝试过，但是我做不到：

I tried it but I am not able to do it:

    private void dataGridView_CurrentCellDirtyStateChanged(object sender, EventArgs e)
    {
        DataGridView dgv = sender as DataGridView;
        DataGridViewCell cell = dgv.CurrentCell;

        if (dgv.Rows[cell.RowIndex].Cells["Gender"].Value.ToString().Trim() == "Male")
        {
            // Male
            dgv.Rows[cell.RowIndex].DefaultCellStyle.BackColor = Color.White;
        }
        else
        {
            // Female
            dgv.Rows[cell.RowIndex].DefaultCellStyle.BackColor = Color.DarkGray;
        }
    }

OR：

    private void dataGridView_CellFormatting(object sender, DataGridViewCellFormattingEventArgs e)
    {
        DataGridView dgv = sender as DataGridView;

        if (dgv.Columns[e.ColumnIndex].Name.Equals("Gender"))
        {
            if (e.Value != null && e.Value.ToString().Trim() == "Male")
            {
                e.CellStyle.BackColor = Color.White;
            }
            else
            {
                e.CellStyle.BackColor = Color.DarkGray;
            }
        }

        //if (dgv.Rows[e.RowIndex].Cells["Gender"].Value.ToString().Trim() == "Male")
        //{
        //    e.CellStyle.BackColor = Color.White;
        //}
        //else
        //{
        //    e.CellStyle.BackColor = Color.DarkGray;
        //}
    }

关于这些的任何提示都将为您带来很大的帮助。

Any tips on these will be great help. Thanks in advance.

推荐答案

要更改背景色，您必须订阅 CellFormatting 事件。然后将此代码添加到事件处理程序中：

To change the Background color you must subscribe to the CellFormatting event. Then add this code to the event handler:

private void dataGridView_CellFormatting(object sender, DataGridViewCellFormattingEventArgs e)
{
    DataGridView dgv = sender as DataGridView;

    if (dgv.Columns[e.ColumnIndex].Name.Equals("Gender"))
    {
        if (e.Value != null && e.Value.ToString().Trim() == "Male")
        {
            dgv.Rows[e.RowIndex].Cells["name"].Style.BackColor = Color.White;
        }
        else
        {
            dgv.Rows[e.RowIndex].Cells["name"].Style.BackColor = Color.DarkGray;
        }
    }

}

在 DataGridViewComboBoxCell 中选择新值时进行验证，订阅 CurrentCellDirtyStateChanged 事件并在其处理程序中尝试此代码：

To cause a validation when a new value is selected in your DataGridViewComboBoxCell,subscribe to the CurrentCellDirtyStateChanged event and try this code in its handler:

private void dataGridView_CurrentCellDirtyStateChanged(object sender, EventArgs e)
{
    DataGridView dgv = sender as DataGridView;
    DataGridViewCell cell = dgv.CurrentCell;
    if (cell is DataGridViewComboBoxCell)
    {
        dgv.CommitEdit(DataGridViewDataErrorContexts.Commit);
        dgv.EndEdit();
    }
}

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