datagridview重叠_datagridview绑定list_datagridview右键菜单(60)

{

DataGridViewCell cell = dataGridView1[e.ColumnIndex, e.RowIndex];

if (cell.ErrorText != String.Empty)

{

if (!errorTooltip.Active)

{

errorTooltip.Show(cell.ErrorText, dataGridView1, 1000);

}

errorTooltip.Active = true;

}

}

}

private void dataGridView1_CellMouseLeave(object sender, DataGridViewCellEventArgs e)

{

if (cellInError.X == e.ColumnIndex &&

cellInError.Y == e.RowIndex)

{

if (errorTooltip.Active)

{

errorTooltip.Hide(dataGridView1);

errorTooltip.Active = false;

}

}

}

20. 如何同时显示绑定数据和非绑定数据？

The data you display in the DataGridView control will normally come from a data source of some kind, but you might want to display a column of data that does not come from the data source. This kind of column is called an unbound column. Unbound columns can take many forms. As discussed in the data section above, you can use virtual mode to display additional data along with bound data.

The following code example demonstrates how to create an unbound column of check box cells to enable the user to select database records to process. The grid is put into virtual mode and responds to the necessary events. The selected records are kept by ID in a dictionary to allow the user to sort the content but not lose the checked rows.

private System.Collections.Generic.Dictionary<int, bool> checkState;

private void Form1_Load(object sender, EventArgs e)

{

dataGridView1.AutoGenerateColumns = false;

dataGridView1.DataSource = customerOrdersBindingSource;

// The check box column will be virtual.

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