将两个 datagridview 列合并为一个新列 [英] merging two datagridview columns into one new column

问题描述

我想将两个 datagridview 列合并为一个新列.

i want to merge two datagridview columns into one new column.

我首先将两个 col 的 Visible 属性更改为 false，然后我尝试添加新的 col，该值必须格式化为 col1Value 和 col2Value 是上述列的值:

i first change Visible property of two col to false, then i try to add new col which that value must be formatted as this which col1Value and col2Value is value of above columns:

string.Format("{0} per {1}", col1Value, col2Value);

我的代码

reportResultForm.dgvResult.Columns["Height"].Visible = false;
reportResultForm.dgvResult.Columns["Width"].Visible = false;
DataGridViewColumn col = new DataGridViewColumn();
col.DefaultCellStyle.Format = "{0} per {1}";
col.CellTemplate = new DataGridViewTextBoxCell();
dgvResult.Columns.Add(col);

但是我不知道怎么做！请帮我.我的方法是真的吗?

but i dont know how do this! please help me. my way is true?

推荐答案

您可以自己实现 DataGridViewTextBoxCell 并为其覆盖 GetFormattedValue 方法.您可以在此处返回列的格式化值，例如:

You can made your own implementation of the DataGridViewTextBoxCell and override GetFormattedValue method for it. There you can return the formatted value for your column below is an example:

// use custom DataGridViewTextBoxCell as columns's template
col.CellTemplate = new MyDataGridViewTextBoxCell();

...

// custom DataGridViewTextBoxCell implementation 
public class MyDataGridViewTextBoxCell : DataGridViewTextBoxCell
{
    protected override Object GetFormattedValue(Object value,
        int rowIndex,
        ref DataGridViewCellStyle cellStyle,
        TypeConverter valueTypeConverter,
        TypeConverter formattedValueTypeConverter,
        DataGridViewDataErrorContexts context)
    {
        return String.Format("{0} per {1}",
            this.DataGridView.Rows[rowIndex].Cells[0].Value,
            this.DataGridView.Rows[rowIndex].Cells[1].Value);
    }
}

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