Gridview基於gridview datakeyname的背景顏色

Question

我想根據datakey爲我的gridview背景rowcolor着色。我想要的是，每個數據鍵名稱的分組都會以灰色着色，然後下一個顏色爲白色，然後是下一個顏色灰色等，因此基於不同的數據鍵名稱進行交替。這是我下面的代碼。有人能幫我嗎？

protected void grdContents_RowDataBound(object sender, GridViewRowEventArgs e) 
{ 
    //Default values 
    string strPreviousDataKeyValue = ""; 
    Color RowColor = Color.grey; 
    foreach (GridViewRow row in grdContents.Rows) 
    { 
     if (!strPreviousDataKeyValue.Equals(grdContents.DataKeys[row.RowIndex].Value.ToString())) 
     { 
      row.BackColor = RowColor; 
      strPreviousDataKeyValue = grdContents.DataKeys[row.RowIndex].Value.ToString(); 
     } 
    } 
} 

Answer 1

RowDataBound是在GridView每一行執行。所以你的foreach循環相當多餘。您還必須檢查正確的RowType = DataRow。

這應該工作：

protected void grdContents_RowDataBound(Object sender, GridViewRowEventArgs e) 
{ 
    if (e.Row.RowType == DataControlRowType.DataRow) 
    { 
     if (e.Row.RowIndex == 0) 
      e.Row.BackColor = Color.Gray; 
     else 
     { 
      var thisKey = grdContents.DataKeys[e.Row.RowIndex].Value; 
      var prevKey = grdContents.DataKeys[e.Row.RowIndex - 1].Value; 
      var prevRow = grdContents.Rows[e.Row.RowIndex - 1]; 
      if (thisKey.Equals(prevKey)) 
       e.Row.BackColor = prevRow.BackColor; 
      else 
       e.Row.BackColor = prevRow.BackColor == Color.Gray ? Color.White : Color.Gray; 
     } 
    } 
}