Winforms 如何创建带有浮动标签的自定义DataGridViewComboxCell
我希望在同一datagridview列中有两个控件 我想自定义DataGridViewComboxCell,这样它将显示所选值的值,并在其上显示带有一些文本的浮动标签。在过去,我可以通过复选框和标签来实现这一点,但DataGridViewComboxCell的问题是,当我重写paint事件时,它会显示一个空数据源 在使用Paint事件后,我尝试再次分配数据源,但尽管我在DataGridViewComboxCell中看到值和显示正确值的标签,但我进入了一个无限循环,因此我看到GUI不断闪烁 10倍的帮助 代码如下: *当窗体加载时Winforms 如何创建带有浮动标签的自定义DataGridViewComboxCell,winforms,custom-controls,datagridviewcombobox,Winforms,Custom Controls,Datagridviewcombobox,我希望在同一datagridview列中有两个控件 我想自定义DataGridViewComboxCell,这样它将显示所选值的值,并在其上显示带有一些文本的浮动标签。在过去,我可以通过复选框和标签来实现这一点,但DataGridViewComboxCell的问题是,当我重写paint事件时,它会显示一个空数据源 在使用Paint事件后,我尝试再次分配数据源,但尽管我在DataGridViewComboxCell中看到值和显示正确值的标签,但我进入了一个无限循环,因此我看到GUI不断闪烁 10倍
MyDGVCheckBoxColumn col = new MyDGVCheckBoxColumn();
col.DataPropertyName = "value";
col.DataSource = list;
col.DisplayMember = "Yes";
col.ValueMember = "value";
col.DefaultCellStyle.Alignment = DataGridViewContentAlignment.MiddleCenter;
this.dataGridView1.Columns.Add(col);
this.dataGridView1.RowCount = 50;
通用列表的类:
public class CheckThis
{
public string Yes { get; set; }
public string value { get; set; }
public CheckThis()
{
Yes = "gggg";
value = "1";
}
}
自定义DataGridViewComboxCell的代码(我在过去的某个站点使用了类似的示例)
public class MyDGVCheckBoxColumn : DataGridViewComboBoxColumn
{
private string label;
public string Label
{
get
{
return label;
}
set
{
label = value;
}
}
public override DataGridViewCell CellTemplate
{
get
{
return new MyDGVCheckBoxCell();
}
}
}
public class MyDGVCheckBoxCell : DataGridViewComboBoxCell
{
private string label;
public string Label
{
get
{
return label;
}
set
{
label = value;
}
}
protected override void Paint(Graphics graphics, Rectangle clipBounds, Rectangle cellBounds, int rowIndex, DataGridViewElementStates elementState, object value, object formattedValue, string errorText, DataGridViewCellStyle cellStyle, DataGridViewAdvancedBorderStyle advancedBorderStyle, DataGridViewPaintParts paintParts)
{
// the base Paint implementation paints the check box
base.Paint(graphics, clipBounds, cellBounds, rowIndex, elementState, value, formattedValue, errorText, cellStyle, advancedBorderStyle, paintParts);
// Get the check box bounds: they are the content bounds
Rectangle contentBounds = this.GetContentBounds(rowIndex);
// Compute the location where we want to paint the string.
Point stringLocation = new Point();
stringLocation.Y = cellBounds.Y + 30;
stringLocation.X = cellBounds.X + contentBounds.Bottom;
// Paint the string.
var res = false;
MyDGVCheckBoxColumn col = (MyDGVCheckBoxColumn)this.OwningColumn;
col.DataSource = list;
col.DisplayMember = "Yes";
col.ValueMember = "value";
this.label = "Customer Does Not Appear";
graphics.DrawString(
this.Label, new Font("Arial", 6, FontStyle.Bold), System.Drawing.Brushes.Red, stringLocation);
}
public object list { get; set; }
}