我有一个动态创建DataGridView的方法但是当它显示时,宽度大于内容宽度(列的总宽度)。高度也没有足够的长度来满足行的长度。
我尝试使用此方法,但它无法正常工作:
DataGridView CreateInputBox(int proc, int mac)
{
DataGridView databox = new DataGridView();
for (int i = 0; i < mac; i++)
{
databox.Columns.Add("col" + (i + 1), "M" + (i + 1));
databox.Columns[i].DefaultCellStyle.Alignment = DataGridViewContentAlignment.MiddleCenter;
databox.Columns[i].SortMode = DataGridViewColumnSortMode.NotSortable;
}
databox.RowTemplate.DefaultHeaderCellType = typeof(CustomHeaderCell);
databox.RowHeadersWidthSizeMode = DataGridViewRowHeadersWidthSizeMode.AutoSizeToAllHeaders;
databox.RowHeadersDefaultCellStyle.Padding = new Padding(2);
for (int i = 0; i < proc; i++)
{
databox.Rows.Add();
databox.Rows[i].HeaderCell.Value = "P" + (i + 1);
}
databox.DefaultCellStyle.SelectionBackColor = Color.LightGray;
databox.AllowUserToAddRows = false;
databox.AllowUserToDeleteRows = false;
databox.AllowUserToOrderColumns = false;
databox.AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.AllCells;
databox.AutoSizeRowsMode = DataGridViewAutoSizeRowsMode.AllCells;
//This block doesn't work
var totalHeight = databox.Rows.GetRowsHeight(DataGridViewElementStates.None);
var totalWidth = databox.Columns.GetColumnsWidth(DataGridViewElementStates.None);
databox.Width = totalWidth;
databox.Height = totalHeight;
//
return databox;
}
public class CustomHeaderCell : DataGridViewRowHeaderCell
{
protected override Size GetPreferredSize(Graphics graphics, DataGridViewCellStyle cellStyle, int rowIndex, Size constraintSize)
{
var size1 = base.GetPreferredSize(graphics, cellStyle, rowIndex, constraintSize);
var value = string.Format("{0}", this.DataGridView.Rows[rowIndex].HeaderCell.FormattedValue);
var size2 = TextRenderer.MeasureText(value, cellStyle.Font);
var padding = cellStyle.Padding;
return new Size(size2.Width + padding.Left + padding.Right, size1.Height);
}
protected override void Paint(Graphics graphics, Rectangle clipBounds, Rectangle cellBounds, int rowIndex, DataGridViewElementStates cellState, object value, object formattedValue, string errorText, DataGridViewCellStyle cellStyle, DataGridViewAdvancedBorderStyle advancedBorderStyle, DataGridViewPaintParts paintParts)
{
base.Paint(graphics, clipBounds, cellBounds, rowIndex, cellState, value, formattedValue, errorText, cellStyle, advancedBorderStyle, DataGridViewPaintParts.Background);
base.PaintBorder(graphics, clipBounds, cellBounds, cellStyle, advancedBorderStyle);
TextRenderer.DrawText(graphics, string.Format("{0}", formattedValue), cellStyle.Font, cellBounds, cellStyle.ForeColor);
}
}
结果:
正如您所看到的,DataGridView控件的宽度太长了。我怎样才能适应这两个维度?
答案 0 :(得分:3)
主要问题是新创建的DataGridView
在添加到父容器之前尚未完成其内部布局,并且仍会将所有列报告为宽度= 100。
解决这个问题的一种方法是在显示DGV后调用大小调整功能:
void sizeDGV(DataGridView dgv)
{
DataGridViewElementStates states = DataGridViewElementStates.None;
dgv.ScrollBars = ScrollBars.None;
var totalHeight = dgv.Rows.GetRowsHeight(states) + dgv.ColumnHeadersHeight;
totalHeight += dgv.Rows.Count * 4 // a correction I need
var totalWidth = dgv.Columns.GetColumnsWidth(states) + dgv.RowHeadersWidth;
dgv.ClientSize = new Size(totalWidth , totalHeight );
}
请注意,我已经修复了一些问题:
答案 1 :(得分:0)
只需使用
dataGridView1.AutoSizeMode = DataGridViewAutoSizeColumnMode.Fill;
完整代码:
public class Person
{
public int ID { get; set; }
public string Name { get; set; }
}
public Form1()
{
InitializeComponent();
List<Person> persons = new List<Person> {new Person() {ID = 0, Name = "one"}, new Person() {ID = 1, Name = "two"}, new Person() {ID = 2, Name = "tree"}, new Person() {ID = 3, Name = "four"}};
dataGridView1.DataSource = persons;
dataGridView1.AutoSizeMode = DataGridViewAutoSizeColumnMode.Fill;
}
private System.Windows.Forms.DataGridView dataGridView1;
private void InitializeComponent()
{
this.dataGridView1 = new System.Windows.Forms.DataGridView();
((System.ComponentModel.ISupportInitialize)(this.dataGridView1)).BeginInit();
this.SuspendLayout();
//
// dataGridView1
//
this.dataGridView1.AutoSizeColumnsMode = System.Windows.Forms.DataGridViewAutoSizeColumnsMode.Fill;
this.dataGridView1.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
this.dataGridView1.Dock = System.Windows.Forms.DockStyle.Fill;
this.dataGridView1.Location = new System.Drawing.Point(0, 0);
this.dataGridView1.Name = "dataGridView1";
this.dataGridView1.Size = new System.Drawing.Size(284, 262);
this.dataGridView1.TabIndex = 0;
//
// Form1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(284, 262);
this.Controls.Add(this.dataGridView1);
this.Name = "Form1";
this.Text = "Form1";
((System.ComponentModel.ISupportInitialize)(this.dataGridView1)).EndInit();
this.ResumeLayout(false);
}