Question

我使用以下代码填充DatagGridView：

using (DataTable dtLLV = new DataTable())
{
    daLLV.Fill(dtLLV);

    dgSSW.AutoGenerateColumns = false;
    dgSSW.VirtualMode = true;
    dgSSW.ColumnCount = 5;

    var col0 = new DataGridViewTextBoxColumn
    {
        HeaderText = "Q. No.",
        Name = "RowNum",
        ReadOnly = true,
        Width = 70
    };
    dgSSW.Columns.Insert(0, col0);
    dgSSW.CellFormatting += GridCellFormatting;

    dgSSW.Columns[1].Name = "subsec_name";
    dgSSW.Columns[1].HeaderText = "Sub Section Name";
    dgSSW.Columns[1].DataPropertyName = "subsec_name";
    dgSSW.Columns[1].Width = 210;

    dgSSW.Columns[2].Name = "rt_correct_ans";
    dgSSW.Columns[2].HeaderText = "Correct Answer";
    dgSSW.Columns[2].DataPropertyName = "rt_correct_ans";

    dgSSW.Columns[3].Name = "rt_your_ans";
    dgSSW.Columns[3].HeaderText = "Your Answer";
    dgSSW.Columns[3].DataPropertyName = "rt_your_ans";


    dgSSW.Columns[4].Name = "q_r_difficulty";
    dgSSW.Columns[4].HeaderText = "Difficulty Level";
    dgSSW.Columns[4].DataPropertyName = "q_r_difficulty";

    dgSSW.Columns[5].Name = "rt_quest_all_s";
    dgSSW.Columns[5].HeaderText = "qid";
    dgSSW.Columns[5].DataPropertyName = "rt_quest_all_s";
    dgSSW.Columns[5].Visible = false;

    dgSSW.DataSource = dtLLV;

    var col3 = new DataGridViewImageColumn { HeaderText = "Result", Name = "Pic",Image=imgList.Images[0] };
    dgSSW.Columns.Insert(4, col3);

    var col7 = new DataGridViewButtonColumn
    {
        HeaderText = "Action",
        Name = "Action",
        Text = "View",
        UseColumnTextForButtonValue = true
    };
    dgSSW.Columns.Add(col7);

    dgSSW.CellContentClick += GridCellContentClick;

}//data table closed and disposed here

现在，如果下面提到的两个数据绑定列的DB值相等，我想在DataGridViewImageColumn中显示一个图像。如何在GridCellFormatting事件中进行这些相等检查？我正在使用C＃在胜利形式。

dgSSW.Columns [2] .Name =＆＃34; rt_correct_ans＆＃34 ;;

等于

dgSSW.Columns [3] .Name =＆＃34; rt_your_ans＆＃34 ;;

Basically, here "rt_correct_ans" & "rt_your_ans" are Table fields which store Integer values like

> rt_correct_ans | rt_your_ans
--------------------------------
1              | 3
2              | 2
4              | 4
5              | 0
........

So i want to check 
if(rt_correct_ans ==  rt_your_ans)
{
  show image 1;
}
else
{
 show image 2;
}

Answer 1

根据@Chris How to change DataGridView column value based on condition的建议我现在已经在GridCellFormatting事件中修改了我的代码作为folllows

if (dgSSW.Columns[e.ColumnIndex].Name == "Pic")
{
    if(Convert.ToInt32(this.dgSSW.Rows[e.RowIndex].Cells[2].Value) == Convert.ToInt32(this.dgSSW.Rows[e.RowIndex].Cells[3].Value))
    {
        e.Value = imgList.Images[0];
    }
    else
    {
        e.Value = imgList.Images[1];
    }
}

它解决了我的问题:)。谢谢@Chris和@Reza

根据特定条件在datagridview列中显示图像

1 个答案: