Question

我有一个数据绑定GridView，在button_click上我想逐行读取GridView行并读取行中每个单元格的值并更新数据库中的表格？我也知道如何检查该单元格是否包含null。

我正在尝试这样的事情而陷入困境：

protected void SAVE_GRID_Click(object sender, EventArgs e)
{
    int rowscount = GridView2.Rows.Count;
    int columnscount = GridView2.Columns.Count;
    for (int i = 0; i < rowscount; i++)
    {
        for (int j = 1; j < columnscount; j++)
        {
            // I want to get data of each cell in a row
            // I want to read the corresponding header and store
        }
    }       
}

Answer 1

最简单的方法是使用foreach：

foreach(GridViewRow row in GridView2.Rows)
{
    // here you'll get all rows with RowType=DataRow
    // others like Header are omitted in a foreach
}

编辑：根据您的编辑，您正在错误地访问该列，您应该从0开始：

foreach(GridViewRow row in GridView2.Rows)
{
    for(int i = 0; i < GridView2.Columns.Count; i++)
    {
        String header = GridView2.Columns[i].HeaderText;
        String cellText = row.Cells[i].Text;
    }
}

Answer 2

正如“Tim Schmelter”所说，这是最好的方法：只需改变它的代码seconde循环（GridView2.Columns [i] .Count by row.Cells.Count）所以它看起来似乎是：

foreach(GridViewRow row in GridView2.Rows)
{
    for(int i = 0; i < GridView2.Columns.Count; i++)
    {
        String header = GridView2.Columns[i].HeaderText;
        String cellText = row.Cells[i].Text;
    }
}

谢谢。

Answer 3

foreach (DataGridViewRow row in GridView2.Rows)
            {
                if ( ! row.IsNewRow)
                {
                    for (int i = 0; i < GridView2.Columns.Count; i++)
                    {
                        String header = GridView2.Columns[i].HeaderText;
                        String cellText = Convert.ToString(row.Cells[i].Value);
                    }
                }
            }

此处在迭代单元格之前，需要检查NewRow。

Answer 4

foreach (DataGridViewRow row in dataGridView1.Rows)
        {
            for (int i = 0; i < dataGridView1.Columns.Count; i++)
            {
                String header = dataGridView1.Columns[i].HeaderText;
                //String cellText = row.Cells[i].Text;
                DataGridViewColumn column = dataGridView1.Columns[i]; // column[1] selects the required column 
                column.AutoSizeMode = DataGridViewAutoSizeColumnMode.AllCells; // sets the AutoSizeMode of column defined in previous line
                int colWidth = column.Width; // store columns width after auto resize           
                colWidth += 50; // add 30 pixels to what 'colWidth' already is
                this.dataGridView1.Columns[i].Width = colWidth; // set the columns width to the value stored in 'colWidth'
            }
        }

如何遍历GridView中的每一行，每列和单元格并获取其值

4 个答案: