C # DataGridView Complete Introduction

0. Ranks, width adaptive, plus numbering, background color.

Grid.             Columns.Add ("id", "id"); Grid. columns["ID"]. DisplayIndex = 0;
for (int i = 0; i < grid. Rows.Count; i++)
{
Grid. Rows[i]. cells["ID"]. Value = i + 1;
}
Grid. Rowheadersvisible = false;
Grid. Allowusertoaddrows = false;
Grid. Rowsdefaultcellstyle.font = new Font ("Song Body", 8, fontstyle.regular);
Grid. autoSizeRowsMode = Datagridviewautosizerowsmode.allcells;
Grid. autoSizeColumnsMode = Datagridviewautosizecolumnsmode.allcells;

Grid. BackgroundColor = Color.cadetblue;

1. DataGridView current Cell Properties GET, change

2. DataGridView Edit Properties

3. DataGridView The new append row in the bottom of the list is not represented

4. DataGridView determines whether the currently selected row is a newly appended row

5. DataGridView Delete Line can be set

6. DataGridView not represented and deleted

1. Current cell properties Get, change

[C #]

' The value of the currently selected cell

Console.WriteLine (DataGridView1.CurrentCell.Value)

' The index value of the current column

Console.WriteLine (DataGridView1.CurrentCell.ColumnIndex)

' The row index value of the current cell

Console.WriteLine (DataGridView1.CurrentCell.RowIndex)

' Assigns the value at (0, 0) in the control to the current cell.

Datagridview1.currentcell =datagridview1[0, 0]

2.DataGridView Edit Properties

All cell Edit Properties

[C #]

' DataGridView1 read-only property

Datagridview1.readonly = True

Specify row and column cell edit properties

[C #]

Datagridview1.columns[1]readonly = True

DATAGRIDVIEW1.ROWS[2]. ReadOnly = True

Datagridview1[0, 0]. ReadOnly = True

To determine the editing properties of a cell based on criteria

When the value of Column2 in the following example is true, Column1 is set to editable

[C #]

private void Datagridview1_cellbeginedit (object sender, DataGridViewCellCancelEventArgs e)
{
if (this. Datagridview1.columns[e.columnindex]. Name.tostring (). Equals ("Column2"))
{
if (datagridview1["Column2", E.rowindex]. Value.tostring (). ToLower (). Equals ("true"))
{
datagridview1["Column1", E.rowindex]. ReadOnly = false;
}
Else
{
datagridview1["Column1", E.rowindex]. ReadOnly = true;
}
}
}

3.DataGridView the bottom column new append rows are not represented

[C #]

Datagridview1.allowusertoaddrows = False

4. Determine whether the currently selected row is a newly appended row

[C #]

if (DataGridView1.CurrentRow.IsNewRow)
{
Console.WriteLine ("Current line, new added row");
}
Else
{
Console.WriteLine ("Current line, not newly added row");
}

5. DataGridView Delete Line can be set

[C #]

Datagridview1.allowusertodeleterows = False

Determine if the current row is to be deleted based on criteria

[C #]

Code 1 private void Datagridview1_userdeletingrow (object sender, Datagridviewrowcanceleventargs e)
2 {
3
4
5
6 if (MessageBox.Show OK to delete?, delete confirmation, Messageboxbuttons.okcancel, messageboxicon.question). Equals (System.Windows.Forms.DialogResult.OK))
7 {
8
9}
Ten Else
11 {
E.cancel = true;
13}
14}

6. DataGridView not represented and deleted

The ranks do not represent

[C #]

' The first column of DataGridView1 does not indicate

Datagridview1.columns[0]. Visible = False

' The first line of DataGridView1 does not mean

Datagridview1.rows[0]. Visible = False

The column header section does not represent

[C #]

Datagridview1.columnheadersvisible = False

Datagridview1.rowheadersvisible = False

Specify row and column deletions

[C #]

DataGridView1.Columns.Remove ("Column1")

DataGridView1.Columns.RemoveAt (0)

DataGridView1.Rows.RemoveAt (0)

Select Rows to delete (multiple rows)

[C #]

' DataGridView1 Delete the selected row

foreach (DataGridViewRow R in Datagridview1.selectedrows)
{
if (!r.isnewrow)
{
DataGridView1.Rows.Remove (R);
}
}

7. DataGridView row Width Height set to cannot edit

8. DataGridView Automatic adjustment of the high row amplitude

9. DataGridView designated row and column freeze

DataGridView column Order change can be set

DataGridView Line Complex Selection

The rows, columns, and cells selected by DataGridView are obtained

7. DataGridView Row Width Height set to cannot edit