于dataGridView行读取问题

Question

我想用按钮实现读取dataGridView的行数，上一条，下一条，第一条，最后一条的功能,怎样实现呢？？？

Answer 1

dataGridView的行数
 this.dataGridView1.Rows.Count.ToString();
上一条，            if (this.dataGridView1.Rows.Count > 1)
            {
                DataGridViewRow row = this.dataGridView1.Rows[this.dataGridView1.CurrentRow.Index - 1];                for (int i = 0; i < row.Cells.Count; i++)
                {
                    MessageBox.Show(row.Cells[i].Value.ToString());
                }
            }下一条，            if (this.dataGridView1.Rows.Count > 1)
            {
                DataGridViewRow row = this.dataGridView1.Rows[this.dataGridView1.CurrentRow.Index + 1];                for (int i = 0; i < row.Cells.Count; i++)
                {
                    MessageBox.Show(row.Cells[i].Value.ToString());
                }
            }第一条，            if (this.dataGridView1.Rows.Count > 0)
            {
                DataGridViewRow row = this.dataGridView1.Rows[0];
                for (int i = 0; i < row.Cells.Count; i++)
                {
                    MessageBox.Show(row.Cells[i].Value.ToString());
                }
            }最后一条            if (this.dataGridView1.Rows.Count > 0)
            {
                DataGridViewRow row = this.dataGridView1.Rows[this.dataGridView1.Rows.Count-1];                for (int i = 0; i < row.Cells.Count; i++)
                {
                    MessageBox.Show(row.Cells[i].Value.ToString());
                }
            }

Answer 2

行数 dataGridView1.Rows.Count-1
下一行 先判断下是否是最后一行。 上一行dataGridView1.CurrentRow.Index - 1；第一行 0，最后一行dataGridView1.Rows.Count-1-1
dataGridView1.SelectionMode = DataGridViewSelectionMode.FullRowSelect;   
            dataGridView1.CurrentCell   =   dataGridView1.Rows[dataGridView1.CurrentRow.Index + 1].Cells[0];

Answer 3

1楼的未判断currentRow是否为第一行或是最后一行记录.
其它的没有问题
up

Answer 4

   this.dataGridView1.Rows.Count.ToString(); 
上一条，             if (this.dataGridView1.Rows.Count > 1) 
            { 
                DataGridViewRow row = this.dataGridView1.Rows[this.dataGridView1.CurrentRow.Index - 1];                 for (int i = 0; i < row.Cells.Count; i++) 
                { 
                    MessageBox.Show(row.Cells[i].Value.ToString()); 
                } 
            } 下一条，             if (this.dataGridView1.Rows.Count > 1) 
            { 
                DataGridViewRow row = this.dataGridView1.Rows[this.dataGridView1.CurrentRow.Index + 1];                 for (int i = 0; i < row.Cells.Count; i++) 
                { 
                    MessageBox.Show(row.Cells[i].Value.ToString()); 
                } 
            } 第一条，             if (this.dataGridView1.Rows.Count > 0) 
            { 
                DataGridViewRow row = this.dataGridView1.Rows[0]; 
                for (int i = 0; i < row.Cells.Count; i++) 
                { 
                    MessageBox.Show(row.Cells[i].Value.ToString()); 
                } 
            } 最后一条             if (this.dataGridView1.Rows.Count > 0) 
            { 
                DataGridViewRow row = this.dataGridView1.Rows[this.dataGridView1.Rows.Count-1];                 for (int i = 0; i < row.Cells.Count; i++) 
                { 
                    MessageBox.Show(row.Cells[i].Value.ToString()); 
                } 
            }
楼上正确

Answer 5

//上一条
  if (dgMX.CurrentRow.Index > 0)
            {
                int rowIndex = dgMX.CurrentRow.Index;
                DataTable dtPre = ((DataTable)dgMX.DataSource);                DataRow drAdd = dtPre.NewRow();
                DataRow drDel = dtPre.NewRow();                for (int i = 0; i < dtPre.Columns.Count; i++)
                {
                    drAdd[i] = dtPre.Rows[rowIndex][i].ToString();
                    drDel[i] = dtPre.Rows[rowIndex - 1][i].ToString();
                }
                dtPre.Rows.InsertAt(drAdd, rowIndex - 1);
                dtPre.Rows.RemoveAt(rowIndex + 1);
                dgMX.CurrentCell = dgMX.Rows[rowIndex - 1].Cells[1];
            }
        }
     //下一条 if (dgMX.Rows.Count > 0)
            {
                if (dgMX.CurrentRow.Index < dgMX.Rows.Count - 1)
                {
                    int rowIndex = dgMX.CurrentRow.Index;
                    DataTable dtPre = ((DataTable)dgMX.DataSource);                    DataRow drAdd = dtPre.NewRow();
                    DataRow drDel = dtPre.NewRow();                    for (int i = 0; i < dtPre.Columns.Count; i++)
                    {
                        drAdd[i] = dtPre.Rows[rowIndex][i].ToString();
                        drDel[i] = dtPre.Rows[rowIndex + 1][i].ToString();
                    }
                    dtPre.Rows.InsertAt(drDel, rowIndex);
                    dtPre.Rows.RemoveAt(rowIndex + 2);
                    dgMX.CurrentCell = dgMX.Rows[rowIndex + 1].Cells[1];
                }
            }

Answer 6

你是说实现选中的光标移动吗。      //上一条
        private void button1_Click(object sender, EventArgs e)
        {
            int index = this.dataGridView1.SelectedRows[0].Index;
            if (index != 0)
                this.dataGridView1.CurrentCell = this.dataGridView1.Rows[index - 1].Cells[0];
            else
                MessageBox.Show("已经是最上一条了");
        }        //下一条
        private void button2_Click(object sender, EventArgs e)
        {
            int index = this.dataGridView1.SelectedRows[0].Index;
            if (index != this.dataGridView1.RowCount-1)
                this.dataGridView1.CurrentCell = this.dataGridView1.Rows[index + 1].Cells[0];
            else
                MessageBox.Show("已经是最后一条了");
        }        //最后一条
        private void button3_Click(object sender, EventArgs e)
        {
            this.dataGridView1.CurrentCell = this.dataGridView1[0, 0];
        }        //第一条
        private void button4_Click(object sender, EventArgs e)
        {
            this.dataGridView1.CurrentCell = this.dataGridView1[0, this.dataGridView1.RowCount - 1];
        }

Answer 7

使用BindingSource组件和BindingNavigator控件。

Answer 8

用上边的方法取得行号。
dataGridView的selectrowindex制定就行了。或者用currentrow指定行对象、