当列表绑定到datagridview时修复列宽 [英] fix a columns width when a list is bound to a datagridview

问题描述

我有一个我已经绑定到datagridview的列表。我希望第一列是一个固定的大小。数据绑定到dataGridView，我似乎找不到一种访问单个colums属性的方法。如果我尝试myDatagridview.colums [0]我得到一个索引的边界，因为它表示列数为0。

  private DataGridView setUpDataGrid（List< NVRlineVal> _NVRData）
 {
 // setup dataGridView 
 DataGridView NVRDataGridView = new System.Windows.Forms.DataGridView（）; 
 NVRDataGridView.ColumnHeadersHeightSizeMode = 
 System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize; 
 NVRDataGridView.Dock = System.Windows.Forms.DockStyle.Fill; 
 NVRDataGridView.AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.Fill; 
 
 
 NVRDataGridView.Name =NVRDataGridView+ nvrIndex; 
 NVRDataGridView.RowHeadersWidthSizeMode = 
 System.Windows.Forms.DataGridViewRowHeadersWidthSizeMode.AutoSizeToDisplayedHeaders; 
 NVRDataGridView.TabIndex = 0; 
 NVRDataGridView.DataSource = _NVRData; 
 // var clmn = NVRDataGridView.Columns [0]; 
 
返回NVRDataGridView; 
} 
  

有关如何仅为这些列之一设置固定列宽度的任何想法，其余的将自动调整？

编辑原始代码，以显示仍然可以工作的更多清理版本

解决方案

我做类似的事情，但是格式化。

问题是网格在数据源的设置之后没有绘制 - 您需要在 DataBindingComplete 事件中进行更改。

这是一些片段....

（从 https： //minisqlquery.svn.codeplex.com/svn/trunk/MiniSqlQuery/QueryForm.cs ）

- grid def：

  this.gridResults1.AllowUserToAddRows = false; 
 this.gridResults1.AllowUserToDeleteRows = false; 
 this.gridResults1.AutoSizeColumnsMode = System.Windows.Forms.DataGridViewAutoSizeColumnsMode.ColumnHeader; 
 this.gridResults1.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize; 
 this.gridResults1.Dock = System.Windows.Forms.DockStyle.Fill; 
 this.gridResults1.Location = new System.Drawing.Point（3，3）; 
 this.gridResults1.Name =gridResults1; 
 this.gridResults1.ReadOnly = true; 
 this.gridResults1.Size = new System.Drawing.Size（1023,242）; 
 this.gridResults1.TabIndex = 0; 
  

- 稍后订阅 DataBindingComplete ：

  grid.DataBindingComplete + = GridDataBindingComplete; 
  

- 处理事件（这里我修改格式，但尝试更改宽度）：

  private void GridDataBindingComplete（object sender，DataGridViewBindingCompleteEventArgs e）
 {
 DataGridView grid = sender as DataGridView; 
 if（grid == null）
 {
 return; 
} 
 DataTable dt = grid.DataSource作为DataTable; 
 if（dt == null）
 {
 return; 
} 
 
 string nullText = _settings.NullText; 
 string dateTimeFormat = _settings.DateTimeFormat; （int i = 0; i  
 if（dt.Columns [i] .DataType == typeof（DateTime ））
 {
 DataGridViewCellStyle dateCellStyle = new DataGridViewCellStyle（）; 
 dateCellStyle.NullValue = nullText; 
 dateCellStyle.Format = dateTimeFormat; 
 grid.Columns [i] .DefaultCellStyle = dateCellStyle; 
} 
} 
} 
  

I have a list that I have bound to a datagridview. I want the first column to be a fixed size. The data is bound to the dataGridView and I can't seem to find a way to access an individual colums properties. if I try myDatagridview.colums[0] I get an index out of bounds, since it says the columns count is 0.

   private DataGridView setUpDataGrid(List<NVRlineVal> _NVRData)
    {
        //setup dataGridView
        DataGridView NVRDataGridView = new System.Windows.Forms.DataGridView();
        NVRDataGridView.ColumnHeadersHeightSizeMode =
            System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
        NVRDataGridView.Dock = System.Windows.Forms.DockStyle.Fill;
        NVRDataGridView.AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.Fill;


        NVRDataGridView.Name = "NVRDataGridView" + nvrIndex;
        NVRDataGridView.RowHeadersWidthSizeMode =
            System.Windows.Forms.DataGridViewRowHeadersWidthSizeMode.AutoSizeToDisplayedHeaders;
        NVRDataGridView.TabIndex = 0;
        NVRDataGridView.DataSource = _NVRData;
        //var clmn = NVRDataGridView.Columns[0];

        return NVRDataGridView;
    }

Any ideas on how to have a fixed column width for only one of these columns, the rest will autosize?

edited original code, to show a more cleaned up version that still works

解决方案

I do something similar but with formatting.

The problem is that the grid is not drawn after the setting of the data source - you need to do you changes in the DataBindingComplete event.

Here are some snippets....

(from https://minisqlquery.svn.codeplex.com/svn/trunk/MiniSqlQuery/QueryForm.cs)

-- grid def:

        this.gridResults1.AllowUserToAddRows = false;
        this.gridResults1.AllowUserToDeleteRows = false;
        this.gridResults1.AutoSizeColumnsMode = System.Windows.Forms.DataGridViewAutoSizeColumnsMode.ColumnHeader;
        this.gridResults1.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
        this.gridResults1.Dock = System.Windows.Forms.DockStyle.Fill;
        this.gridResults1.Location = new System.Drawing.Point(3, 3);
        this.gridResults1.Name = "gridResults1";
        this.gridResults1.ReadOnly = true;
        this.gridResults1.Size = new System.Drawing.Size(1023, 242);
        this.gridResults1.TabIndex = 0;

-- later on subscribe to DataBindingComplete event:

grid.DataBindingComplete += GridDataBindingComplete;

-- handle the event (here I am modifying the format but you try changing the width):

    private void GridDataBindingComplete(object sender, DataGridViewBindingCompleteEventArgs e)
    {
        DataGridView grid = sender as DataGridView;
        if (grid == null)
        {
            return;
        }
        DataTable dt = grid.DataSource as DataTable;
        if (dt == null)
        {
            return;
        }

        string nullText = _settings.NullText;
        string dateTimeFormat = _settings.DateTimeFormat;

        for (int i = 0; i < dt.Columns.Count; i++)
        {
            if (dt.Columns[i].DataType == typeof (DateTime))
            {
                DataGridViewCellStyle dateCellStyle = new DataGridViewCellStyle();
                dateCellStyle.NullValue = nullText;
                dateCellStyle.Format = dateTimeFormat;
                grid.Columns[i].DefaultCellStyle = dateCellStyle;
            }
        }
    }

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