C#中DataGrid自动调整列宽
2010-03-22 16:17阅读：
#region 使grid根据内容适应列宽
public static void
SizeColumnsToContent (DataGrid dataGrid,
int nRowsToScan)
{
// Create graphics object
for measuring widths.
Graphics Graphics =
dataGrid.CreateGraphics();
// Define new table style.
DataGridTableStyle tableStyle = new
DataGridTableStyle();
try
{
System.Data .DataTable dataTable =
(System.Data .DataTable)dataGrid.DataSource;
if (-1 == nRowsToScan)
{
nRowsToScan = dataTable.Rows.Count;
}
else
{
// Can only scan rows
if they exist.
nRowsToScan = System.Math.Min(nRowsToScan,
dataTable.Rows.Count);
}
// Clear any existing table
styles.
dataGrid.TableStyles.Clear();
// Use mapping name that
is defined in the data
source.
tableStyle.MappingName =
dataTable.TableName;
//设置grid中蓝白交错效果
tableStyle.AlternatingBackColor =Color.LightBlue
;
tableStyle.BackColor =Color.White ;
// Now create the column
styles within the table
style.
DataGridTextBoxColumn columnStyle;
int iWidth;
for (int iCurrCol = 0;
iCurrCol < dataTable.Columns.Count;
iCurrCol++)
{
DataColumn dataColumn =
dataTable.Columns[iCurrCol];
columnStyle = new
DataGridTextBoxColumn();
columnStyle.TextBox.Enabled = true;
columnStyle.HeaderText =
dataColumn.ColumnName;
columnStyle.MappingName =
dataColumn.ColumnName;
// Set width to header
text width.
iWidth =
(int)(Graphics.MeasureString(columnStyle.HeaderText,
dataGrid.Font).Width);
// Change width, if data
width is wider than header
text width.
// Check the width of
the data in the first
X rows.
DataRow dataRow;
for (int iRow = 0;
iRow < nRowsToScan; iRow++)
{
dataRow = dataTable.Rows[iRow];
if (null !=
dataRow[dataColumn.ColumnName])
{
int iColWidth =
(int)(Graphics.MeasureString(dataRow.ItemArray[iCurrCol].ToString(),
dataGrid.Font).Width);
iWidth = (int)System.Math.Max(iWidth,
iColWidth);
}
}
columnStyle.Width = iWidth +
4;
// Add the new column
style to the table style.
tableStyle.GridColumnStyles.Add(columnStyle);
}
// Add the new table
style to the data grid.
dataGrid.TableStyles.Add(tableStyle);
}
catch(Exception e)
{
MessageBox.Show(e.Message);
}
finally
{
Graphics.Dispose();
}
}
#endregion
其中 int nRowsToScan=-1 表示对所有的记录起作用
转自CSDN评论
