我为拥有数据网格视图的用户控件制作了自定义设计器。
现在我正在尝试序列化datagridview的columns属性。
该集合可以包含DataGridViewTextBoxColumn，DataGridViewComboBoxColumn，DataGridViewButtonColumn等。
对于DataGridViewImageColumn，我从资源文件中获取图像。 我无法弄清楚如何从我的自定义CodeDomSerializer序列化图像属性。 这是代码：
public class PanelDataGridViewCodeDomSerializer : CodeDomSerializer
{
public override object Deserialize(IDesignerSerializationManager manager, object codeObject)
{
CodeDomSerializer baseClassSerializer = (CodeDomSerializer)manager.GetSerializer(typeof(PanelDataGridView).BaseType, typeof(CodeDomSerializer));
return baseClassSerializer.Deserialize(manager, codeObject);
}
public override object Serialize(IDesignerSerializationManager manager, object value)
{
CodeDomSerializer baseClassSerializer = (CodeDomSerializer)manager.GetSerializer(typeof(PanelDataGridView).BaseType, typeof(CodeDomSerializer));
// serialize the UserControl
object codeObject = baseClassSerializer.Serialize(manager, value);
if (codeObject is CodeStatementCollection)
{
CodeStatementCollection statements = (CodeStatementCollection)codeObject;
// The code statement collection is valid, so add a comment.
string commentText = "This comment was added to this object by a custom serializer.";
CodeCommentStatement comment = new CodeCommentStatement(commentText);
statements.Insert(0, comment);
// serialize the inner DataGridView's columns
if (value is PanelDataGridView)
{
DataGridViewColumnCollection innercolumns = (value as PanelDataGridView).zColumns;
// declare the variable collection of columns in the inner DataGridView
List<CodeVariableReferenceExpression> parameter_list = new List<CodeVariableReferenceExpression>();
CodeArrayCreateExpression createArray = null;
CodeMethodInvokeExpression methodcall = null;
int i = 1;
CodeStatementCollection col_Statements = null;
// Type is DataGridViewTextBoxColumn
foreach (DataGridViewColumn col in innercolumns)
{
/// serialize each column
col_Statements = new CodeStatementCollection();
CodeObjectCreateExpression col_ObjectCreate = new CodeObjectCreateExpression(col.GetType());
CodeVariableDeclarationStatement col_VariableDeclaration = new CodeVariableDeclarationStatement(col.GetType(), "column" + i.ToString());
CodeAssignStatement col_Assign_Create = new CodeAssignStatement(new CodeVariableReferenceExpression("column" + i.ToString()), col_ObjectCreate);
// serialize the DataPropertyName property of the column
CodeAssignStatement col_Assign_data_property_name = new CodeAssignStatement(new CodeVariableReferenceExpression("column" + i.ToString() + ".DataPropertyName"), new CodePrimitiveExpression(col.DataPropertyName));
// serialize the HeaderText property of the column
CodeAssignStatement col_Assign_header_text = new CodeAssignStatement(new CodeVariableReferenceExpression("column" + i.ToString() + ".HeaderText"), new CodePrimitiveExpression(col.HeaderText));
CodeAssignStatement col_Assign_image = null;
CodeAssignStatement col_Assign_image_layout = null;
if (col.GetType() == typeof(DataGridViewImageColumn))
{
DataGridViewImageColumn colImage = (DataGridViewImageColumn)col;
// serialize the Image property of the column
col_Assign_image = new CodeAssignStatement(new CodeVariableReferenceExpression("column" + i.ToString() + ".Image"), new CodePrimitiveExpression(colImage.Image.ToString()));
// serialize the ImageLayout property of the column
col_Assign_image_layout = new CodeAssignStatement(new CodeVariableReferenceExpression("column" + i.ToString() + ".ImageLayout"), new CodeFieldReferenceExpression(new CodeTypeReferenceExpression(typeof(DataGridViewImageCellLayout)), colImage.ImageLayout.ToString()));
}
// serialize the Resizable property of the column
//CodeAssignStatement col_Assign_resizable = new CodeAssignStatement(new CodeVariableReferenceExpression("column" + i.ToString() + ".Resizable"), new CodeTypeReference(col.Resizable));
CodeAssignStatement col_Assign_resizable = new CodeAssignStatement(new CodeVariableReferenceExpression("column" + i.ToString() + ".Resizable"), new CodeFieldReferenceExpression(new CodeTypeReferenceExpression(typeof(DataGridViewTriState)),col.Resizable.ToString()));
// serialize the Visible property of the column
CodeAssignStatement col_Assign_visible = new CodeAssignStatement(new CodeVariableReferenceExpression("column" + i.ToString() + ".Visible"), new CodePrimitiveExpression(col.Visible));
// serialize the Width property of the column
CodeAssignStatement col_Assign_width = new CodeAssignStatement(new CodeVariableReferenceExpression("column" + i.ToString() + ".Width"), new CodePrimitiveExpression(col.Width));
CodeFieldReferenceExpression col_FieldReference = base.SerializeToExpression(manager, col) as CodeFieldReferenceExpression;
if (col_FieldReference == null)
{
col_Statements.Add(col_VariableDeclaration);
col_Statements.Add(col_Assign_Create);
col_Statements.Add(col_Assign_data_property_name);
col_Statements.Add(col_Assign_header_text);
if (col.GetType() == typeof(DataGridViewImageColumn))
{
col_Statements.Add(col_Assign_image);
col_Statements.Add(col_Assign_image_layout);
}
col_Statements.Add(col_Assign_resizable);
col_Statements.Add(col_Assign_visible);
col_Statements.Add(col_Assign_width);
parameter_list.Add(new CodeVariableReferenceExpression("column" + i.ToString()));
}
///
statements.AddRange(col_Statements);
i++;
}
CodeFieldReferenceExpression target = base.SerializeToExpression(manager, value) as CodeFieldReferenceExpression;
// if the designer hasn't all the columns to the inner DataGridView's column collection, add them by ourselves.
if (target != null && parameter_list.Count > 0)
{
createArray = new CodeArrayCreateExpression(typeof(DataGridViewColumn), parameter_list.ToArray());
methodcall = new CodeMethodInvokeExpression(new CodeVariableReferenceExpression(target.FieldName + ".zColumns"), "AddRange", createArray);
statements.Add(methodcall);
}
}
}
return codeObject;
}
}
现在，我只是来自：
col_Assign_image = new CodeAssignStatement(new CodeVariableReferenceExpression("column" + i.ToString() + ".Image"), new CodePrimitiveExpression(colImage.Image.ToString()));
当设计师对控件进行序列化时，我得到了以下代码：
System.Windows.Forms.DataGridViewImageColumn column1;
column1 = new System.Windows.Forms.DataGridViewImageColumn();
column1.DataPropertyName = "frn_id";
column1.HeaderText = "";
column1.Image = "System.Drawing.Bitmap";
column1.ImageLayout = System.Windows.Forms.DataGridViewImageCellLayout.Stretch;
column1.Resizable = System.Windows.Forms.DataGridViewTriState.False;
column1.Visible = true;
column1.Width = 20;
this.tableLayoutPanel1.SuspendLayout();
this.SuspendLayout();
我希望我有类似的东西：
column1.Image = global::....SomePath....Resources.ico_right_arrow;
假设＆＃39; global :: .... SomePath ....＆＃39; 是我的资源文件的路径，＆＃39; ico_right_arrow＆＃39 ; 我要检索的图像名称（此处为图标）。 任何想法???