使用 CellValueChanged 和 EditingControlShowing 事件，根据您的需要自定义它。

  private   void  dataGridView1_CellValueChanged（ object  sender，DataGridViewCellEventArgs e）
 {
 var  cell = dataGridView1.Rows [e.RowIndex ] .Cells [e.ColumnIndex]; 
 cell.Style =  new  DataGridViewCellStyle（）{BackColor = Color.White}; 
 string  fontName =   Microsoft Sans Serif 跨度>; 
 cell.Style.Font =  new 字体（fontName， 8  .25f，FontStyle.Regular ，GraphicsUnit.Pixel）; 

} 



 private   void  dataGridView1_EditingControlShowing（ object  sender，DataGridViewEditingControlShowingEventArgs e）
 {
 e.CellStyle.BackColor = Color.Yellow; 
 e.CellStyle.Font =  new 字体（e.CellStyle.Font，FontStyle.Bold）; 

} 

嗨试试这个



私有DataGridViewTextBoxEditingControl withEventsField_EditControl;

private DataGridViewTextBoxEditingControl EditControl {

get {return withEventsField_EditControl; }

设置{

if（withEventsField_EditControl！= null）{

withEventsField_EditControl.KeyDown - = EditControl_KeyDown;

}

withEventsField_EditControl = value;

if（withEventsField_EditControl！= null）{

withEventsField_EditControl.KeyDown + = EditControl_KeyDown;

}

}

}



private void DGV_EditingControlShowing（对象发送者，System.Windows.Forms。 DataGridViewEditingControlShowingEventArgs e）

{

if（EditControl == null）{

EditControl =（DataGridViewTextBoxEditingControl）e.Control;

}

}

private void EditControl_KeyDown（对象发送者，System.Windows.Forms.KeyEventArgs e）

{

e.CellStyle.ForeColor = Color.Red;

e.CellStyle.BackColor = Color.Black;

e.CellStyle.Font = new Font（e .CellStyle.Font，FontStyle.Bold）;

}

Dear All,
I want change cell color and style while entering data into it.
I used following code but not work. Please help me.
dataGridView1.Rows.Add(strAccountName).DefaultCellStyle.BackColor =Color.Yellow;
Please note that I want to change fore color and boldness.

What I have tried:

I tried following code but not working. Please siggest

dataGridView1.Rows.Add(strAccountName).DefaultCellStyle.BackColor =Color.Yellow;

use CellValueChanged and EditingControlShowing event, customize it depends on your need.

private void dataGridView1_CellValueChanged(object sender, DataGridViewCellEventArgs e)
       {
           var cell = dataGridView1.Rows[e.RowIndex].Cells[e.ColumnIndex];
           cell.Style = new DataGridViewCellStyle() { BackColor = Color.White };
           string fontName = "Microsoft Sans Serif";
           cell.Style.Font = new Font(fontName, 8.25f, FontStyle.Regular, GraphicsUnit.Pixel);

       }



       private void dataGridView1_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
       {
           e.CellStyle.BackColor = Color.Yellow;
           e.CellStyle.Font = new Font(e.CellStyle.Font, FontStyle.Bold);

       }

Hi try this

private DataGridViewTextBoxEditingControl withEventsField_EditControl;
private DataGridViewTextBoxEditingControl EditControl {
get { return withEventsField_EditControl; }
set {
if (withEventsField_EditControl != null) {
withEventsField_EditControl.KeyDown -= EditControl_KeyDown;
}
withEventsField_EditControl = value;
if (withEventsField_EditControl != null) {
withEventsField_EditControl.KeyDown += EditControl_KeyDown;
}
}
}

private void DGV_EditingControlShowing(object sender, System.Windows.Forms.DataGridViewEditingControlShowingEventArgs e)
{
if (EditControl == null) {
EditControl = (DataGridViewTextBoxEditingControl)e.Control;
}
}
private void EditControl_KeyDown(object sender, System.Windows.Forms.KeyEventArgs e)
{
e.CellStyle.ForeColor = Color.Red;
e.CellStyle.BackColor = Color.Black;
e.CellStyle.Font = new Font(e.CellStyle.Font, FontStyle.Bold);
}