質問編集履歴
1
AddForm側ののコードを追加しました。
test
CHANGED
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File without changes
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test
CHANGED
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@@ -124,10 +124,115 @@
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124
124
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addForm.Show();
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125
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}
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}
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127
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+
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128
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public partial class AddForm : Form
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129
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{
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130
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private DataGridView dgv;
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131
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132
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SqlConnection conn = new SqlConnection();
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133
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SqlCommand cmd = new SqlCommand();
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134
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135
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public AddForm(DataGridView dgv)
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136
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{
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137
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InitializeComponent();
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this.dgv = dgv;
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139
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}
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140
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141
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private void btnRegister_Click(object sender, EventArgs e)
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142
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{
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143
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if (string.IsNullOrEmpty(txtBox1.Text) ||
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144
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string.IsNullOrEmpty(txtBox2.Text) ||
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string.IsNullOrEmpty(txtBox3.Text) ||
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146
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string.IsNullOrEmpty(txtBox4.Text))
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147
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{
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148
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MessageBox.Show("すべての項目に値を入力してください。", "エラー", MessageBoxButtons.OK, MessageBoxIcon.Error);
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149
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return;
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150
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}
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151
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152
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conn.ConnectionString = "Data Source=localhost;Database=task2;User ID=sa;password=localhost";
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153
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154
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try
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155
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{
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156
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conn.Open();
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157
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cmd.CommandText = @"
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158
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INSERT INTO Todolist (
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159
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date_time,
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160
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todo,
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161
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place,
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162
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what,
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163
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how_much_time
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164
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)
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165
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VALUES (
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@date_time,
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167
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@todo,
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168
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@place,
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169
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@what,
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170
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@how_much_time
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)";
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172
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173
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cmd.Parameters.AddWithValue("@date_time", dateTimePicker1.Value);
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174
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cmd.Parameters.AddWithValue("@todo", txtBox1.Text);
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cmd.Parameters.AddWithValue("@place", txtBox2.Text);
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cmd.Parameters.AddWithValue("@what", txtBox3.Text);
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cmd.Parameters.AddWithValue("@how_much_time", txtBox4.Text);
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178
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179
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cmd.Connection = conn;
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180
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181
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cmd.ExecuteNonQuery();
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182
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}
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183
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184
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catch (Exception ex)
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185
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{
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MessageBox.Show(ex.Message);
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}
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finally
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{
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conn.Close();
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}
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try
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{
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conn.Open();
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196
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197
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cmd.CommandText = "SELECT * FROM Todolist;";
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198
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cmd.Connection = conn;
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199
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200
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using (SqlDataReader reader = cmd.ExecuteReader())
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201
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{
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202
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if (reader.HasRows)
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203
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{
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int rowNo = 0;
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205
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while (reader.Read())
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{
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208
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dgv.Rows.Add(new DataGridViewRow());
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209
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dgv.Rows[rowNo].Cells[1].Value = reader[0];
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211
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dgv.Rows[rowNo].Cells[2].Value = reader[1];
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dgv.Rows[rowNo].Cells[3].Value = reader[2];
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213
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dgv.Rows[rowNo].Cells[4].Value = reader[3];
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dgv.Rows[rowNo].Cells[5].Value = reader[4];
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dgv.Rows[rowNo].Cells[6].Value = reader[5];
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216
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+
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rowNo++;
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}
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}
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}
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}
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catch (Exception ex)
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223
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{
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MessageBox.Show(ex.Message);
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225
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}
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226
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finally
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227
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{
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conn.Close();
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229
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}
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230
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this.Close();
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231
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}
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}
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127
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128
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### 試したこと
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129
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CellClickイベントで何の動作もしないようにするコードを書いてみたが追加された。
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130
236
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### 補足情報（FW/ツールのバージョンなど）
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131
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-
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132
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-
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237
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+
Windows 10 の Visual Studio 2022 で Windowsフォームアプリケーション(.NET Framework) Version 4.8 です。
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133
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-
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+
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