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1、C#代码优化的案例1. 代码简洁代码简洁，削减代码量，初始值尽可能在属性上设置，而不是编写代码。合同统计分析中JToolComBox_ColmunType_SelectedIndexChanged方法中：switch (jToolComBox_ColmunType.SelectedIndex.ToString() case 0:/执行金额 jWebChart1.chartId = 9cc897e5-99dd-468d-84db-3390a18f0e22; jWebChart1.SetUrl(); break; case 1:/变更金额 jWebChart1.chartId = 9cc897e5
2、-99dd-468d-84db-3390a18f0e23; jWebChart1.SetUrl(); break; case 2:/索赔金额 jWebChart1.chartId = 9cc897e5-99dd-468d-84db-3390a18f0e24; jWebChart1.SetUrl(); break; case 3:/付款批复金额 jWebChart1.chartId = 9cc897e5-99dd-468d-84db-3390a18f0e25; jWebChart1.SetUrl(); break; case 4:/实际支付金额 jWebChart1.chartId = 9cc8
3、97e5-99dd-468d-84db-3390a18f0e26; jWebChart1.SetUrl(); break; case 5:/合同份数 jWebChart1.chartId = 9cc897e5-99dd-468d-84db-3390a18f0e27; jWebChart1.SetUrl(); break; default:/执行金额 jWebChart1.chartId = 9cc897e5-99dd-468d-84db-3390a18f0e22; jWebChart1.SetUrl(); break; 重构后：switch (jToolComBox_ColmunType.Se
4、lectedIndex.ToString() case 0:/执行金额 jWebChart1.chartId = 9cc897e5-99dd-468d-84db-3390a18f0e22; break; case 1:/变更金额 jWebChart1.chartId = 9cc897e5-99dd-468d-84db-3390a18f0e23; break; case 2:/索赔金额 jWebChart1.chartId = 9cc897e5-99dd-468d-84db-3390a18f0e24; break; case 3:/付款批复金额 jWebChart1.chartId = 9cc8
5、97e5-99dd-468d-84db-3390a18f0e25; break; case 4:/实际支付金额 jWebChart1.chartId = 9cc897e5-99dd-468d-84db-3390a18f0e26; break; case 5:/合同份数 jWebChart1.chartId = 9cc897e5-99dd-468d-84db-3390a18f0e27; break; default:/执行金额 jWebChart1.chartId = 9cc897e5-99dd-468d-84db-3390a18f0e22; break; jWebChart1.SetUrl()
6、;合同综合查询中jTabControl8_SelectedIndexChanged方法中多个If语句(3个以上)，改写为switch合同综合查询中JeMisQuery_V_HT_CONTRACT_SHOW_TJ_OnQueryFinished方法中/请填写脚本 decimal de_SIGN_AMOUNT = 0; decimal de_ALTER_AMOUNT = 0; decimal de_ALL_CLAIM_AMOUNT = 0; decimal de_PAY_AMOUNT = 0; decimal de_ALL_RP_AMOUNT = 0; decimal de_EXE_AMOUNT
7、= 0; decimal de_APPLY_AMOUNT = 0; decimal de_APPLY_APPROVE_AMOUNT = 0; string str_where = eMisQuery_V_HT_CONTRACT_SHOW.UserCustomCondition; string sql = select count(*) as ht_contract_count,sum(SIGN_AMOUNT)nvl(sum(SIGN_AMOUNT), 0) as SIGN_AMOUNT,sum(ALTER_AMOUNT) as ALTER_AMOUNT, + sum(ALL_CLAIM_AMO
8、UNT)as ALL_CLAIM_AMOUNT,sum(PAY_AMOUNT) as PAY_AMOUNT, sum(ALL_RP_AMOUNT) as ALL_RP_AMOUNT, sum(EXE_AMOUNT) as EXE_AMOUNT + ,sum(APPLY_AMOUNT) as APPLY_AMOUNT, sum(APPLY_APPROVE_AMOUNT) as APPLY_APPROVE_AMOUNT from GCMIS.v_ht_contact_show t where + str_where; DataSet ds = eMisSurface1.ExecQuerySql(s
9、ql); if (ds != null & ds.Tables.Count 0) /有意义不，确定为True DataRow dr = ds.Tables0.Rows0; jLabel_Jl.Text = drht_contract_count.ToString(); object obj = drSIGN_AMOUNT; de_SIGN_AMOUNT = Convert.ToDecimal(obj is DBNull ? 0.00 : obj); /为什么要jLabel_QD.Text = drSIGN_AMOUNT.ToString(0.00); 先转成Decimal，再转成String
10、jLabel_QD.Text = de_SIGN_AMOUNT.ToString(0.00); obj = drALTER_AMOUNT; de_ALTER_AMOUNT = Convert.ToDecimal(obj is DBNull ? 0.00 : obj); jLabel_BG.Text = de_ALTER_AMOUNT.ToString(0.00); obj = drALL_CLAIM_AMOUNT; de_ALL_CLAIM_AMOUNT = Convert.ToDecimal(obj is DBNull ? 0.00 : obj); jLabel_SP.Text = de_A
11、LL_CLAIM_AMOUNT.ToString(0.00); obj = drPAY_AMOUNT; de_PAY_AMOUNT = Convert.ToDecimal(obj is DBNull ? 0.00 : obj); jLabel_ZF.Text = de_PAY_AMOUNT.ToString(0.00); obj = drALL_RP_AMOUNT; de_ALL_RP_AMOUNT = Convert.ToDecimal(obj is DBNull ? 0.00 : obj); jLabel_JF.Text = de_ALL_RP_AMOUNT.ToString(0.00);
