如何在搜索文本框中輸入字符時突出顯示datagridview行

Question

使用文本框搜索給定datagridview列中的值時，下面的代碼將選定行放置在包含輸入文本的列上。

private void textBox1_TextChanged(object sender, EventArgs e) 
    { 
     //if (Char.IsLetter(e.KeyChar)) 
     //{ 
      for (int i = 0; i < (productDataGridView.Rows.Count); i++) 
      { 

       if (productDataGridView.Rows[i].Cells[1].Value.ToString().StartsWith(textBox1.Text, true, CultureInfo.InvariantCulture)) 
       { 
        productDataGridView.FirstDisplayedCell = productDataGridView[1, i]; 
        productDataGridView.CurrentRow.DefaultCellStyle.BackColor = System.Drawing.Color.Red; 
        return; // stop looping 
       } 
      } 
    } 

的問題是，我不能突出或更改所需行的背景色，而在文本框中輸入任何幫助嗎？

Answer 1

嘗試這樣的解決方案，這個最終的作品就像一個魅力：

  try 
     { 
      productDataGridView.ClearSelection(); //or restore rows backcolor to default 
      for (int i = 0; i < (productDataGridView.Rows.Count); i++) 
      { 
       if (productDataGridView.Rows[i].Cells[1].Value.ToString().StartsWith(textBox1.Text, true, CultureInfo.InvariantCulture)) 
       { 
        productDataGridView.FirstDisplayedScrollingRowIndex = i; 
        productDataGridView.Rows[i].Selected = true; //It is also possible to color the row backgroud 
        return; 
       } 
      } 
     } 
     catch (Exception) 
     { 
     } 

Answer 2

試試這個

 //restore backcolor of rows to default e.g. loop through grid and set backcolor to white 
     foreach(DataGridViewRow row in productDataGridView.Rows) 
     { 
      if (row.Cells[1].Value.ToString().StartsWith(textBox1.Text, true,  CultureInfo.InvariantCulture)) 
      { 
       //productDataGridView.FirstDisplayedCell = productDataGridView[1, i]; 
       row.DefaultCellStyle.BackColor = System.Drawing.Color.Red; 
       return; // stop looping 
      } 
      else 
       //Set backcolor to default 
     } 

     //return; //move return here