Question

我的DataGridView有此事件，当按下Delete键时，该事件应将CurrentCell.Value转换为null。实际上，它确实有效，但是直到我更改选定的/重点突出的单元格后，该值才会改变。如何修改它以便立即更新？

这是我的代码：

private void dataGridView1_KeyUp(object sender, KeyEventArgs e)
    {
        if (e.KeyCode == Keys.Delete)
        {
            dataGridView1.CurrentCell.Value = null;
        }
        dataGridView1.RefreshEdit();
    }

这是整个设计师代码：

        this.dataGridView1.AllowDrop = true;
        this.dataGridView1.AllowUserToAddRows = false;
        this.dataGridView1.AllowUserToDeleteRows = false;
        this.dataGridView1.AllowUserToResizeColumns = false;
        this.dataGridView1.AllowUserToResizeRows = false;
        this.dataGridView1.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom) 
        | System.Windows.Forms.AnchorStyles.Left) 
        | System.Windows.Forms.AnchorStyles.Right)));
        dataGridViewCellStyle1.Alignment = System.Windows.Forms.DataGridViewContentAlignment.MiddleCenter;
        dataGridViewCellStyle1.BackColor = System.Drawing.SystemColors.Control;
        dataGridViewCellStyle1.Font = new System.Drawing.Font("Microsoft Sans Serif", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
        dataGridViewCellStyle1.ForeColor = System.Drawing.SystemColors.WindowText;
        dataGridViewCellStyle1.SelectionBackColor = System.Drawing.Color.Transparent;
        dataGridViewCellStyle1.SelectionForeColor = System.Drawing.SystemColors.WindowText;
        dataGridViewCellStyle1.WrapMode = System.Windows.Forms.DataGridViewTriState.True;
        this.dataGridView1.ColumnHeadersDefaultCellStyle = dataGridViewCellStyle1;
        this.dataGridView1.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
        dataGridViewCellStyle2.Alignment = System.Windows.Forms.DataGridViewContentAlignment.MiddleCenter;
        dataGridViewCellStyle2.BackColor = System.Drawing.Color.White;
        dataGridViewCellStyle2.Font = new System.Drawing.Font("Microsoft Sans Serif", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
        dataGridViewCellStyle2.ForeColor = System.Drawing.SystemColors.ControlText;
        dataGridViewCellStyle2.SelectionBackColor = System.Drawing.Color.Transparent;
        dataGridViewCellStyle2.SelectionForeColor = System.Drawing.SystemColors.ControlText;
        dataGridViewCellStyle2.WrapMode = System.Windows.Forms.DataGridViewTriState.False;
        this.dataGridView1.DefaultCellStyle = dataGridViewCellStyle2;
        this.dataGridView1.Location = new System.Drawing.Point(86, 63);
        this.dataGridView1.MultiSelect = false;
        this.dataGridView1.Name = "dataGridView1";
        this.dataGridView1.Size = new System.Drawing.Size(702, 372);
        this.dataGridView1.TabIndex = 6;
        this.dataGridView1.TabStop = false;
        this.dataGridView1.CellClick += new System.Windows.Forms.DataGridViewCellEventHandler(this.dataGridView1_CellClick);
        this.dataGridView1.CellEndEdit += new System.Windows.Forms.DataGridViewCellEventHandler(this.dataGridView1_CellEndEdit);
        this.dataGridView1.DragDrop += new System.Windows.Forms.DragEventHandler(this.dataGridView1_DragDrop);
        this.dataGridView1.DragOver += new System.Windows.Forms.DragEventHandler(this.dataGridView1_DragOver);
        this.dataGridView1.KeyUp += new System.Windows.Forms.KeyEventHandler(this.dataGridView1_KeyUp);

Answer 1

答案在问题中。如果单元格值仅在不再选择时才更改，则只需取消选择它即可。

private void dataGridView1_KeyUp(object sender, KeyEventArgs e)
    {
        if (e.KeyCode == Keys.Delete)
        {
            dataGridView1.CurrentCell.Value = null;
            dataGridView1.CurrentCell.Selected = false;
        }
    }

直到更改焦点，DataGridViewCell才会更新

1 个答案: