C# 基于唯一单元格值检索GridView行

我想根据单元格值检索网格视图行。例如，我的网格视图有4列（名称、m1、m2、m3），名称包含唯一值。因此，我想获得与指定名称对应的网格视图行

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谢谢编辑：我意识到您可能指的是ASP.NET GridView而不是WinForm DataGridView，这正是我最初回答的问题。在这种情况下，方法是非常不同的

以防万一，我留下了下面的WinFormDataGridView方法

ASP.NET网格视图 GridView有些烦人，因为它不允许您按列名访问单元格。相反，你需要知道索引。您可以硬编码它，但这是不可取的

硬编码方法：

string searchValue = "SpecifiedName";
// where 1 is the hardcoded cell index
var query = from GridViewRow row in GridView1.Rows
            where row.Cells[1].Text == searchValue
            select row;
GridViewRow result = query.FirstOrDefault();

string colName = "name";
int index = (from DataControlField col in GridView1.Columns
            where col.HeaderText == colName
            select GridView1.Columns.IndexOf(col)).FirstOrDefault();

// index used
var query = from GridViewRow row in GridView1.Rows
        where row.Cells[index].Text == searchValue
        select row;
GridViewRow result = query.FirstOrDefault();

动态方法（列索引查找）：

string searchValue = "SpecifiedName";
// where 1 is the hardcoded cell index
var query = from GridViewRow row in GridView1.Rows
            where row.Cells[1].Text == searchValue
            select row;
GridViewRow result = query.FirstOrDefault();

string colName = "name";
int index = (from DataControlField col in GridView1.Columns
            where col.HeaderText == colName
            select GridView1.Columns.IndexOf(col)).FirstOrDefault();

// index used
var query = from GridViewRow row in GridView1.Rows
        where row.Cells[index].Text == searchValue
        select row;
GridViewRow result = query.FirstOrDefault();

备用索引查找：可以使用BoundField，而不是使用HeaderText

int index = (from DataControlField col in GridView1.Columns
            where ((BoundField)col).DataField == colName
            select GridView1.Columns.IndexOf(col)).FirstOrDefault();

WinFormDataGridView 把这个放在这里以防万一

string name = "SpecifiedName";
var query = from DataGridViewRow row in dataGridView1.Rows
            where row.Cells["name"].Value.ToString() == name
            select row;
// the row will be returned by this or contain a default value if not found
DataGridViewRow result = query.FirstOrDefault();

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这就是DataKey属性的用途。So:GridView1.DataKeyNames=“name”

要找到您的匹配项：

   foreach (GridViewRow gvr in GridView1.Rows)
    {
        if (GridView1.DataKeys[gvr.RowIndex].ToString().Equals("mymatch"))
        {
            GridView1.SelectedIndex = gvr.RowIndex;
            break;
        }
    }     

这样做需要更多的代码，但你明白了。现在，如果不想显示“名称”列，则不需要显示该列