출처: https://stackoverrun.com/ko/q/6586360
Gridview의 데이터 중 중복 데이터를 찾아서 표시해준다.
if (int.Parse(rowToCompare.Cells[0].Text) != int.Parse(row.Cells[0].Text))
첫번째 값만 비교.
코드는 다음과 같다.
using System.Data;
using System.Drawing;
protected void bind()
{
con.Open();
SqlCommand cmd = con.CreateCommand();
cmd.CommandType = CommandType.Text;
cmd.CommandText = "select * from tblSample";
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataSet ds = new DataSet();
da.Fill(ds);
GridView1.DataSource = ds;
GridView1.DataBind();
HighlightDuplicate(this.GridView1);
con.Close();
}
public void HighlightDuplicate(GridView gridview)
{
for (int currentRow = 0; currentRow < gridview.Rows.Count - 1; currentRow++)
{
GridViewRow rowToCompare = gridview.Rows[currentRow];
for (int otherRow = currentRow + 1; otherRow < gridview.Rows.Count; otherRow++)
{
GridViewRow row = gridview.Rows[otherRow];
bool duplicateRow = true;
if (int.Parse(rowToCompare.Cells[0].Text) != int.Parse(row.Cells[0].Text))
{
duplicateRow = false;
}
else if (duplicateRow)
{
rowToCompare.BackColor = Color.Red;
row.BackColor = Color.Red;
}
}
}
}
