DataGridView用法合集(1):属性

目录

1.当前的单元格属性取得、变更

2.DataGridView编辑属性

3.DataGridView最下面一列新追加行非表示

4.判断当前选中行是否为新追加的行

5. DataGridView删除行可否设定

6. DataGridView行列不表示和删除

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1.当前的单元格属性取得、变更

[VB.NET]

Console.WriteLine(DataGridView1.CurrentCell.Value)

Console.WriteLine(DataGridView1.CurrentCell.ColumnIndex)

Console.WriteLine(DataGridView1.CurrentCell.RowIndex)

DataGridView1.CurrentCell = DataGridView1(0, 0)

[C#]

Console.WriteLine(DataGridView1.CurrentCell.Value);

Console.WriteLine(DataGridView1.CurrentCell.ColumnIndex);

Console.WriteLine(DataGridView1.CurrentCell.RowIndex);

DataGridView1.CurrentCell = DataGridView1[0, 0];

2.DataGridView编辑属性

全部单元格编辑属性

[VB.NET]

DataGridView1.ReadOnly = True

[C#]

DataGridView1.ReadOnly = true;

指定行列单元格编辑属性

[VB.NET]

DataGridView1.Columns(1).ReadOnly = True

DataGridView1.Rows(2).ReadOnly = True

DataGridView1(0, 0).ReadOnly = True

[C#]

DataGridView1.Columns[1].ReadOnly = true;

DataGridView1.Rows[2].ReadOnly = true;

DataGridView1[0, 0].ReadOnly = true;

根据条件判断单元格的编辑属性

下例中column2的值是True的时候，Column1设为可编辑

[VB.NET]

Private Sub DataGridView1_CellBeginEdit(ByVal sender As Object, _
        ByVal e As DataGridViewCellCancelEventArgs) _
        Handles DataGridView1.CellBeginEdit
    Dim dgv As DataGridView = CType(sender, DataGridView)
    If dgv.Columns(e.ColumnIndex).Name = "Column1" AndAlso _
        Not CBool(dgv("Column2", e.RowIndex).Value) Then
        e.Cancel = True
    End If
End Sub

[C#]

private void DataGridView1_CellBeginEdit(object sender,
    DataGridViewCellCancelEventArgs e)
{
    DataGridView dgv = (DataGridView)sender;
    if (dgv.Columns[e.ColumnIndex].Name == "Column1" &&
        !(bool)dgv["Column2", e.RowIndex].Value)
    {
        e.Cancel = true;
    }
}

3.DataGridView最下面一列新追加行非表示

[VB.NET]

DataGridView1.AllowUserToAddRows = False

[C#]

DataGridView1.AllowUserToAddRows = false;

4.判断当前选中行是否为新追加的行

[VB.NET]

If DataGridView1.CurrentRow.IsNewRow Then
    Console.WriteLine("现在的单元格所在的行是新的行")
Else
    Console.WriteLine("当前单元格所在的行不是新的行。")
End If

[C#]

if (DataGridView1.CurrentRow.IsNewRow)
    Console.WriteLine("现在的单元格所在的行是新的行");
else
    Console.WriteLine("当前单元格所在的行不是新的行");

5. DataGridView删除行可否设定

[VB.NET]

DataGridView1.AllowUserToDeleteRows = False

[C#]

DataGridView1.AllowUserToDeleteRows = false;

根据条件判断当前行是否要删除

[VB.NET]

Private Sub DataGridView1_UserDeletingRow(ByVal sender As Object, _
        ByVal e As DataGridViewRowCancelEventArgs) _
        Handles DataGridView1.UserDeletingRow
    If MessageBox.Show("要删除这一列吗？", "删除确认",MessageBoxButtons.OKCancel,MessageBoxIcon.Question) <> Windows.Forms.DialogResult.OK Then
        e.Cancel = True
    End If
End Sub

[C#]

private void DataGridView1_UserDeletingRow(
    object sender, DataGridViewRowCancelEventArgs e)
{
    if (MessageBox.Show("要删除这一列吗？", "删除确认",MessageBoxButtons.OKCancel,MessageBoxIcon.Question) != DialogResult.OK)
    {
        e.Cancel = true;
    }
}

6. DataGridView行列不表示和删除

行列不表示

[VB.NET]

DataGridView1.Columns(0).Visible = False

DataGridView1.Rows(0).Visible = False

[C#]

DataGridView1.Columns[0].Visible = false;

DataGridView1.Rows[0].Visible = false;

行列表头部分不表示

[VB.NET]

DataGridView1.ColumnHeadersVisible = False

DataGridView1.RowHeadersVisible = False

[C#]

DataGridView1.ColumnHeadersVisible = false;

DataGridView1.RowHeadersVisible = false;

指定行列删除

[VB.NET]

DataGridView1.Columns.Remove("Column1")

DataGridView1.Columns.RemoveAt(0)

DataGridView1.Rows.RemoveAt(0)

[C#]

DataGridView1.Columns.Remove("Column1");

DataGridView1.Columns.RemoveAt(0);

DataGridView1.Rows.RemoveAt(0);

选择的行列删除（多行列）

[VB.NET]

Dim r As DataGridViewRow
For Each r In DataGridView1.SelectedRows
    If Not r.IsNewRow Then
        DataGridView1.Rows.Remove(r)
    End If
Next r

[C#]

foreach (DataGridViewRow r in DataGridView1.SelectedRows)
{
    if (!r.IsNewRow)
    {
        DataGridView1.Rows.Remove(r);
    }
}

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